No. COS can be billed only on a pay-as-you-go (postpaid) basis.
How are COS request fees calculated?
Request fees are calculated based on the number of requests sent to COS, including user requests and backend requests generated after you configure a feature. For more information, see Request Fees.
What changes have been made to COS pricing?
On September 30, 2021, the published prices of COS were reduced as follows:
1. Unit price of object tagging
Product pricing: The prices for public cloud regions in and outside the Chinese mainland were reduced to 0.00025817 USD/10,000 tags/day and 0.0003098 USD/10,000 tags/day, respectively.
Billing cycle: Fees incurred between 00:00 and 23:59:59 on a day are settled the next day.
Bill description: These prices have taken effect for bills generated starting from October 1, 2021 (i.e., fees incurred in September until September 30, 2021).
2. Unit price of DEEP ARCHIVE read/write requests
Product pricing: The prices for all public cloud regions were reduced to 0.07 USD/10,000 requests.
Billing cycle: Fees incurred in a month are billed on the first day of the next month.
Bill description: These prices have taken effect for bills generated starting from October 1, 2021 (i.e., fees incurred in September).
Which regions will benefit from the reduced unit pricing of STANDARD IA storage usage?
The reduction in the unit price of STANDARD_IA storage usage from 0.018 USD/GB/month to 0.015 USD/GB/month will apply to certain regions, including Seoul, Bangkok, Silicon Valley, Jakarta, and São Paulo. The reduction has taken effect on July 1, 2022.
Price Related Content
Which COS Billable Items Have Adjusted Prices?
Details of the price adjustment records for COS billable items are as follows:
Adjustment Time
Adjustment Type
Adjusted Billing Item
Pricing Details
January 15, 2024
Pay-as-You-Go Price Reduction
STANDARD storage capacity
Billable item: STANDARD storage capacity in COS
Price: The published price for the public cloud regions within the Chinese Mainland has been reduced to 0.016 USD/GB/month. For Hong Kong (China) and overseas regions, the published price has been reduced to 0.017 USD/GB/month.
Billing cycle: Daily. Each day, the cost from 00:00:00 to 23:59:59 (UTC+8) of the previous day is billed.
Note:
(1) The price will take effect on the bill dated January 15, 2024, reflecting resource usage during the period from 00:00:00 to 23:59:59 (UTC+8) on January 14, 2024.
(2) If the existing price for a region is lower than the target price after reduction, the price for that region will remain unchanged.
January 15, 2024
Pay-as-You-Go Price Reduction
MAZ_STANDARD storage capacity
Billable item: MAZ_STANDARD storage capacity in COS
Price: The published price for the public cloud regions within the Mainland China has been reduced to 0.0195 USD/GB/month. For Hong Kong (China) and overseas regions, the published price has been reduced to 0.002 USD/GB/month.
Billing cycle: Daily. Each day, the cost from 00:00:00 to 23:59:59 (UTC+8) of the previous day is billed.
Note:
(1) The price will take effect on the bill dated January 15, 2024, reflecting resource usage during the period from 00:00:00 to 23:59:59 (UTC+8) on January 14, 2024.
(2) If the existing price for a region is lower than the target price after reduction, the price for that region will remain unchanged.
January 15, 2024
Pay-as-You-Go Price Reduction
STANDARD_IA storage capacity
Billable item: STANDARD_IA storage capacity in COS
Price: The published price for the public cloud regions within the Mainland China has been reduced to 0.01 USD/GB/month. For Hong Kong (China) and overseas regions, the published price has been reduced to 0.011 USD/GB/month.
Billing cycle: Daily.Each day, the cost from 00:00:00 to 23:59:59 (UTC+8) of the previous day is billed.
Note:
(1) The price will take effect on the bill dated January 15, 2024, reflecting resource usage during the period from 00:00:00 to 23:59:59 (UTC+8) on January 14, 2024.
(2) If the existing price for a region is lower than the target price after reduction, the price for that region will remain unchanged.
January 15, 2024
Pay-as-You-Go Price Reduction
MAZ_STANDARD_IA storage capacity
Billable item: MAZ_STANDARD_IA storage capacity in COS
Price: The published price for the public cloud regions within the Mainland China has been reduced to 0.0132 USD/GB/month. For Hong Kong (China) and overseas regions, the published price has been reduced to 0.0138 USD/GB/month.
Billing cycle: Daily.Each day, the cost from 00:00:00 to 23:59:59 (UTC+8) of the previous day is billed.
Note:
(1) The price will take effect on the bill dated January 15, 2024, reflecting resource usage during the period from 00:00:00 to 23:59:59 (UTC+8) on January 14, 2024.
(2) If the existing price for a region is lower than the target price after reduction, the price for that region will remain unchanged.
January 15, 2024
Pay-as-You-Go Price Reduction
ARCHIVE storage capacity
Billable item: ARCHIVE storage capacity in COS
Price: The published price for the public cloud regions within the Mainland China has been reduced to 0.004 USD/GB/month. For Hong Kong (China) and overseas regions, the published price has been reduced to 0.0045 USD/GB/month.
Billing cycle: Daily.Each day, the cost from 00:00:00 to 23:59:59 (UTC+8) of the previous day is billed.
Note:
(1) The price will take effect on the bill dated January 15, 2024, reflecting resource usage during the period from 00:00:00 to 23:59:59 (UTC+8) on January 14, 2024.
(2) If the existing price for a region is lower than the target price after reduction, the price for that region will remain unchanged.
January 15, 2024
Pay-as-You-Go Price Reduction
INTELLIGENT_TIERING storage capacity
Billable item: INTELLIGENT_TIERING storage capacity in COS
Price: The published price for the public cloud in Hong Kong (China) and overseas regions is the same as that of the converted storage.
Billing cycle: Daily.Each day, the cost from 00:00:00 to 23:59:59 (UTC+8) of the previous day is billed.
Note:
(1) The price will take effect on the bill dated January 15, 2024, reflecting resource usage during the period from 00:00:00 to 23:59:59 (UTC+8) on January 14, 2024.
(2) If the existing price for a region is lower than the target price after reduction, the price for that region will remain unchanged.
November 15, 2023
Pay-as-You-Go Price Reduction
Management Features - Select Feature Fees
Billable items: COS STANDARD Select feature fee, STANDARD_IA Select feature fee, MAZ_STANDARD Select feature fee, and MAZ_STANDARD_IA Select feature fee
Price: The published price for the public cloud in the Frankfurt region has been reduced from 0.0025 USD/GB to 0.00225 USD/GB.
Billing cycle: Daily.Each day, the cost from 00:00:00 to 23:59:59 (UTC+8) of the previous day is billed.
Note: The price will take effect on the bill dated November 15, 2023, reflecting resource usage during the period from 00:00:00 to 23:59:59 (UTC+8) on November 14, 2023.
How Does the Adjusted Published Prices for COS Pay-As-You-Go (post-payment) Become Effective?
Whether the adjusted published prices for the COS pay-as-you-go billable items take effect depend on the discount settings of your account.
Activation Logic
1. Discount price: After the prices are adjusted, the customer automatically uses the latest prices.
2. Contract price:
After adjustment - Customers with contract price configured: The original contract price prevails, and the latest price is not applicable.
After adjustment - Customers without contract price configured: The latest published price prevails, and the latest price is automatically used.
Effective Scenario
Depending on the discount configuration of the adjusted billable items, whether the price after adjustment can be used is determined. Please refer to the following scenarios for details:
Billable Item Discount Configuration
Description
Adjusted Billable Item: No discount, no contract price
As the adjustment to the published price becomes effective, the published price in the billable item automatically refreshes. No action is required.
Adjusted Billable Item: No discount, contract price available
As the adjustment to the published price becomes effective, the contract price remains unchanged and is not affected. There is no change in the discounted price of the billable item on the bill.
Adjusted Billable Item: Discount available, no contract price
As the adjustment to the published price becomes effective, the published price and discounted unit price in the billable item automatically refresh. No action is required.
Adjusted Billable Item: Discount available, contract price available
As the adjustment to the published price becomes effective, the contract price remains unchanged and is not affected. There is no change in the discounted price of the billable item on the bill.
How Does Reduction in the Published Prices for Pay-As-You-Go COS Resource Packs Become Effective?
After the published price of COS resource pack is adjusted, the new price becomes effective immediately.
Whether your resource pack is billed according to the latest price depends on whether the order is placed after the adjustment (new purchases, renewals, or upgrades).Details are as follows:
Scenario
Description
No resource packs under the account
When a new resource pack is purchased, you can use the latest price after the adjustment.
Resource packs available under the account
Before the price adjustment, new purchases, upgrades, and renewals of resource packs still adhere to the original price.
After the price adjustment, new purchases, upgrades, and renewals of resource packs will use the latest price.
Free Tier
Does COS offer a free tier?
COS offers a limited free tier to all new users (both individual and enterprise users) to deduct the fees incurred by data stored in the STANDARD storage class. For more information, see Free Tier.
Does COS offer a free tier outside the Chinese mainland?
Yes. The free tier is applicable to public cloud regions (including those outside the Chinese mainland). For more information, see Regions and Access Endpoints.
The free tier offered by COS can be used to deduct only STANDARD storage usage but not other billable items, such as STANDARD_IA storage usage, ARCHIVE storage usage, requests, and traffic. For more information, see Billable Items.
Why is my account overdue or charged even if I am on the free tier?
The following are some of the possible reasons why your account has overdue payments if your free tier hasn't expired:
1. Multiple billable items are used, but the free tier is insufficient to deduct the fees of all the billable items:
When you upload data to the STANDARD storage class, storage usage fees will be incurred, which can be deducted from the free tier offered by COS. COS provides multiple separately billed storage classes. The free tier of STANDARD cannot be applied to deduction of fees of other storage classes (such as STANDARD_IA).
Objects that need to be accessed or downloaded by other users incur traffic and requests fees, which cannot be deducted from the free tier.
If you upload and download data between the COS bucket and CVM instance in the same region, the access is over the private network in the same region and doesn't incur traffic fees (cross-region private network access will incur cross-region traffic fees). If your data is downloaded to the local file system through the console, API, or COS tools, public network downstream traffic fees will be incurred.
COS offers multiple storage classes that generate different types of requests. For example, if STANDARD_IA data is downloaded, STANDARD_IA requests will be generated and billed on a pay-as-you-go basis.
If your COS bucket is used together with CDN, CDN origin-pull traffic fees may also be incurred. For more information, see Traffic Fees.
If you enable global acceleration, global acceleration fees will also be incurred.
2. Resource usage in excess of the free tier:
For example, if COS offers you free STANDARD storage usage of 50 GB, but your actual usage is 60 GB, the excess of 10 GB will be pay-as-you-go.
3. Expiration of the free tier:
COS offers new users a free tier of STANDARD storage usage valid for six months. After the free tier expires, storage usage will be pay-as-you-go.
Does the free tier apply to the INTELLIGENT TIERING storage class?
No. The free tier is applicable only to STANDARD storage usage but not other billable items such as STANDARD_IA/ARCHIVE storage usage, requests, and traffic.
INTELLIGENT TIERING is an independent storage class and incurs INTELLIGENT TIERING storage usage fees, which cannot be deducted from the free tier for the STANDARD storage class. For more information, see Free Tier.
Does COS offer a free tier for CDN usage?
No. COS and CDN are different products. The CDN origin-pull traffic generated by the use of CDN is billed by COS on a pay-as-you-go basis, and the generated CDN traffic is billed by CDN. For more information on the differences between these two types of traffic, see Traffic Fees.
Resource Packs
What is the Resource Package (Prepaid) mode?
COS has two billing modes: Pay-as-You-Go (Postpaid) and Resource Package (Prepaid). Compared to Pay-as-You-Go (Postpaid), the Resource Package (Prepaid) mode offers more benefits.For information on supported types of resource packages, see Resource Package Overview.
How can I purchase a resource package?
You may purchase resource packages following the guide in [Purchasing Resource Packages](Purchasing a Resource Pack!6e6986405f44365d5173872cb56b0214).
Does the specification of the COS traffic package indicate the available quota each month or the total available quota during the validity period?
The specification of the traffic package refers to the quota available for deduction each month.Fees of excess usage will be deducted from the account balance, and the quota that is not used up in the current month will not be retained to the next month.If you purchase two traffic packages with the same validity period at the same time, both specifications are counted.The monthly quota is the total quota of the two traffic packages, and fees of excess usage will be deducted from the account balance.
Why are fees still deducted from the account balance or overdue payments incurred even if I have purchased a resource package?
If deduction from the account balance or overdue payments still occur after you purchase a resource package, the possible reasons are as follows:
1. The use of COS involves a variety of billing items,but the resource package you purchase cannot deduct fees of all the billing items.
After your data is uploaded to a COS bucket, storage usage fees are incurred. You need to purchase a storage capacity package for fee deduction.COS provides multiple storage classes, each with the corresponding and specific storage capacity package.For example, a capacity package for standard storage cannot be used to deduct storage fees of low-frequency storage.
If your data in COS buckets can be accessed or downloaded by other users, traffic fees and request fees are incurred.You need to purchase a public network downstream traffic package and a data request package for fee deduction.
If data upload and download are between COS buckets and CVM instances in the same region, the access is deemed intra-regional network access, and no traffic fees are incurred. (Cross-regional network access will incur cross-regional traffic fees.)However, public network downstream traffic fees are incurred when the data is downloaded to local paths through the console, APIs, or COS tools.
COS provides various storage classes, with corresponding types of requests.For example, downloading low-frequency storage data requires low-frequency requests. You must use the request packages corresponding to the specific request types.Currently, only standard request packages and low-frequency request packages are provided.Requests of other storage classes can adopt the pay-as-you-go mode.
If you have configured CDN or EdgeOne for COS buckets, CDN origin-pull traffic fees may be incurred. You need to purchase a CDN origin-pull traffic package for fee deduction.For detailed information on the traffic fees incurred when COS is used together with CDN or EdgeOne, see Traffic Generated by Using COS as CDN Origin.
If you have enabled the global acceleration feature, related fees will be incurred.You need to purchase a global acceleration traffic package for fee deduction.
2. The region of the resource package you have purchased is not the same as that of your COS bucket. Therefore, the resource package cannot be used for fee deduction.
When you purchase a resource package, you need to select the region of the resource package.Packages with different regions cannot be used concurrently.For example, if you have purchased a standard storage capacity package for regions in the Chinese mainland (excluding the financial cloud region), but your data is stored in a storage bucket in the Singapore region, the fees of this bucket cannot be deducted using the resource package you have purchased.
Currently, COS only provides resource packages for regions in the Chinese mainland, the Hong Kong (China) region, and regions outside Chinese mainland.The incurred fees of COS buckets in other regions (such as financial cloud region) are still billed based on the actual usage.For more details on regions, see Regions and Access Endpoints.
3. Your usage has exceeded the specification of the purchased resource package.
For example, you have purchased a standard storage capacity package of 100 GB, but the actual usage has reached 105 GB. The excess part of 5 GB is charged in the pay-as-you-go mode, which incurs the fees.You can upgrade your resource package to solve this problem.
Are the fees deducted automatically after I purchase a COS resource package, or are there other configuration operations required?
After you purchase a COS resource package, fees will be deducted automatically starting from the effective time you selected. No other configuration operations are needed.
If I have multiple resource packages under my account, will another resource package be automatically used after one expires?
When a resource package expires or runs out, the system will automatically use other available resource packages. No configuration or data migration operations are required.If no other resource packages are available, fees will be deducted from the account balance by default.If the account balance is less than 0 and is not topped up in time, the service will be suspended due to overdue payment.
Can multiple COS resource packages be used concurrently?
COS resource packages can be used concurrently.The specifications of all resource packages are counted, but the validity periods are not.For descriptions of resource packages and related cases, see Resource Package Overview.
Do I need to purchase a CDN origin-pull traffic package if I have already purchased a public network downstream traffic package?
CDN/EdgeOne origin-pull traffic is generated only when you enable CDN and access COS buckets using CDN for domain name acceleration.The public network downstream traffic package does not cover the CDN/EdgeOne origin-pull traffic.If you have enabled CDN acceleration, it is recommended that you purchase a CDN origin-pull traffic package.
What is the difference between renewing and repurchasing COS resource packages?
Renewal: It refers to extending the validity period of the resource package.For example, you have purchased a public network downstream traffic package of 50 GB with a validity period of three months. If you manually renew it for three months, then the validity period of this traffic package will be extended for three months.During the validity period, you will enjoy a traffic quota of 50 GB each month.
If the resource package price changes (for example, the price drops), the resource packages you have purchased cannot be renewed. Instead, you can purchase new packages.
The free tier resource packages displayed on the package management page are not renewable. You can purchase new packages.
Why some COS resource packages cannot be renewed or upgraded?
The resource packages under the following circumstances do not support renewal or upgrade.You can purchase new packages on the COS resource package purchase page.
1. The standard storage capacity packages provided free of charge to new users do not support renewal or upgrade. (Such packages include those of 50 GB or 1 TB in all regions as displayed on the resource package management page.)
2. If the resource package price changes (for example, the price drops), the resource packages you have purchased cannot be renewed or upgraded. You can purchase new packages.
3. Storage capacity packages support upgrade operations while traffic packages and request packages do not.If you want to upgrade traffic or request packages for a higher specification, you can go to the COS resource package purchase page to purchase new resource packages.Multiple traffic or request packages can be used concurrently.
You can log in to the COS console and choose Package Manage > Purchased resource packages to view the effective time, expiration time, and usage of purchased resource packages.
Do the COS resource packages support renewal or upgrade?
What is the difference between renewal and upgrade of COS resource packages?
Resource package renewal refers to extending the validity of a resource package.
Applicable scenarios for resource package renewal: The validity period of the purchased resource package is about to end, requiring an extension.
Case: Assume that you've purchased a public network downstream traffic package of 50 GB with a validity period of three months. If you manually renew the package for another three months, then the validity period of this package will be extended by three months.During the validity period, you will enjoy a traffic quota of 50 GB each month.
Resource package upgrade refers to the increase of the resource package specifications.
Applicable scenarios for resource package upgrade: The purchased resource package no longer satisfies the actual business requirements. Packages with a higher specification are required.
Case: Assume you've already purchased a public network downstream traffic package of 50 GB with a validity period of three months., If you upgrade the resource package specification to 100 GB on the upgrade page, then this package can deduct fees of 100 GB of public network downstream traffic each month, but the validity period remains unchanged.
Can I request a refund on the COS resource packages?
For resource packages that meet the refund criteria, you can apply for a refund.See Refund on Resource Packages for more information.
Will data be lost after the COS resource package expires? Do I need to migrate the data?
The resource package is used to deduct fees incurred during service usage but not to store data.Once the resource package is used up or expires, the billing mode changes to the pay-as-you-go (post-paid) mode automatically, which means that fees are deducted from the account balance. The data will not be lost, and you do not need to migrate the data.The data will be terminated only when your account has overdue payment for consecutive 15 days. For details, see Payment Overdue.
What is the relationship between COS resource packages and buckets?
COS bucket provides the storage space for data, while resource package is a prepayment method. Resource packages can deduct fees according to billing items and regions and have no direct relationship with COS buckets.For details, see Resource Package Overview.
For example, you have a standard storage capacity package of 50 GB in a region in the Chinese mainland with a validity period of three months under your account.In that case, all standard storage capacity fees of COS buckets in regions in the Chinese mainland under your account can be deducted using this resource package.
What resource package should be purchased to deduct the fees incurred if global acceleration is enabled for COS?
The traffic fees incurred by using the global acceleration feature can be deducted by the global acceleration traffic package.For the description of global acceleration, see Overview.
Will the expiration of the purchased COS resource package result in service suspension?
Once the resource package expires, the pay-as-you-go billing mode will take effect.If your account has overdue payment, the COS service will be suspended 24 hours later. Your data can still be retained for another 15 days. If the balance is not topped up during this period, your data will be terminated.For more information, see Payment Overdue.
Can I transfer the COS resource packages to another Tencent Cloud account for use?
COS resource packages cannot be transferred to other accounts but only be used under the account that has purchased the packages.
Can COS resource packages deduct request fees?
Different billing items of COS correspond to different types of resource packages.Request packages are required for deducting request fees. Currently, COS provides standard storage request packages and low-frequency storage request packages.You can purchase the request packages on the COS resource package purchase page.
Do I need to purchase traffic packages for using COS?
You can decide whether to purchase traffic packages based on the actual scenario.COS has multiple billing items, and the free tier resource packages can only deduct the standard storage capacity fees.During the use, other fees such as traffic fees and request fees may be incurred. It is recommended to purchase the public network downstream traffic packages and request packages before you use COS to avoid deduction from your account balance.You can go to the COS resource package purchase page to purchase the packages.
Can purchased COS resource packages deduct overdue payment?
If the purchased resource package takes effect immediately, the fees incurred on the same day can be deducted using the package.The fees incurred before the purchase cannot be deducted.Therefore, service packages cannot deduct overdue payment.
How are fees deducted by the COS resource packages?
When bills are settled within the validity period of the COS resource package, the following rules apply:
Resource package type: Free tier resource packages are used for deduction before the purchased resource packages.If the total usage exceeds the specifications of both free tier and purchased resource packages, the excess part is billed in pay-as-you-go mode.
Expiration time of resource package: Resource packages that expire first will be used first.Note: The expiration time here refers to the time specified in the validity period of the resource package instead of that of the current cycle.
Resource package usage: Resource packages with more remaining quotas will be used first.
Purchase time of resource package: Resource packages that are purchased first will be used first.
For further description of the rules, see the Types and Rules section in Resource Package Overview.
What are the unit conversion rules of COS resource packages?
COS provides storage capacity packages, traffic packages, and request packages.
1. The billing unit of the storage capacity billing item and storage capacity packages is GB, and the capacity unit conversion ratio is 1:1,024.For example, 1 TB of standard storage capacity equals 1,024 GB. A standard storage capacity package of 1 TB can deduct fees of 1,024 GB of standard storage capacity.
2. The billing unit of the traffic billing item and traffic packages is GB, and the traffic unit conversion ratio is 1:1,000.For example, 1 TB of public network downstream traffic equals 1,000 GB. A public network downstream traffic package of 1 TB can deduct fees of 1,000 GB of public network downstream traffic.
3. The billing unit of the request billing item and request packages is 10,000 requests.For example,A standard storage request package with a quota of 100,000 requests can deduct fees of 100,000 standard storage requests.
What are the expiration, isolation, and termination of a COS resource package?
1. Applicable scope:
The expiration, isolation, and termination policies of COS resource packages only apply to purchased packages (those in the list on the Purchased resource packages page) but not to the packs provided free of charge (those in the list on the Free tier resource package page).You can view the type of your resource packages on the Package Manage page in the COS console.
2. Definitions
Expiration: It refers to the end of the validity period of your resource packages.
You can view the package validity period on the Package Manage page in the COS console."Effective" indicates the start time of the validity period, and "Expires on" indicates the end time of the validity period.
You can view the expiration date of the packages on the Renewal Management page in Billing Center.
Isolation: It refers to the condition in which your resource package will be isolated one day after it expires.
You can view the isolated packages in the list of expired packages on the Package Manage page in the COS console.
Isolated packages are not displayed on the Renewal Management page in Billing Center and cannot be renewed. If such resource packages are still needed, you can purchase again.
Termination: Your resource package will be isolated one day after it expires and will be terminated after it is isolated for 365 days.
Terminated packages are not displayed on the Package Manage page in the COS console.
Terminated packages are not displayed on the Renewal Management page in Billing Center.
Notification of changes in expiration, isolation, and termination policies for COS resource packages
Details:
1. Applicable scope
The changes in the isolation and termination policies apply only to purchased resource packages (those in the list on the Purchased resource packages page) instead of free resource packages (those in the list on the Free tier resource package page).You can view the type of your resource packages on the Package Manage page in the COS console.
2. Policy Description
Policy
Before Change
After Change
Expiration of COS resource package
A notification is sent both before and after the resource package expires.
A notification is sent both before and after the resource package expires, but the notification content is updated.
Isolation of COS resource package
No isolation policy.
The resource package is isolated one day after it expires.Isolated resource packages are displayed on the Package Manage page in the COS console but not on the Renewal Management page in the Billing Center.
Termination of COS resource package
No termination policy.
The resource package is isolated one day after it expires and terminated after it is isolated for 365 days.Terminated resource packages are not displayed on the Package Manage page in the COS console or the Renewal Management page in the Billing Center.
3. Case
If you purchased a standard storage package of 10 GB on January 1, 2023 (UTC+8) with a validity period of one month, this package will expire on January 31, 2023 (UTC+8).You will receive a notification on the expiration both before and after the package expires.
Before the change: After the resource package expires, you can find it on the Package Manage page in the COS console and the Renewal Management page in Billing Center. The package still exists and is not terminated.
After the change: The resource package is isolated one day after it expires.This resource package is displayed on the Package Manage page in the COS console but not on the Renewal Management page in Billing Center.After the resource package is isolated for 365 days, it is terminated and no longer displayed on the Package Manage page in the COS console or the Renewal Management page in Billing Center.
Notification
What types of notifications does COS send?
COS sends notifications for new feature launch, product change, expiration, repossession, and alarms.
What are subscribed and non-subscribed messages?
Subscribed messages: You can customize their recipients and notification methods in Message Center. They are used in default scenarios.
Non-subscribed messages: You cannot modify their recipients and notification methods but can only receive them passively. They are used in special scenarios.
How do I configure the root account and sub-accounts to receive COS notifications?
You can customize the recipients of COS notifications by setting Message Recipient in Subscription Management in Message Center.
Traffic
What are the differences among COS public network downstream traffic, CDN origin-pull traffic, and global acceleration traffic?
Public network downstream traffic: The traffic generated by data transfer from COS to the client over the internet, such as the traffic generated when you directly access a resource at a COS domain name in a browser.
CDN origin-pull traffic: The traffic generated by data transfer from COS to a CDN edge node when you access a CDN acceleration domain after enabling CDN acceleration.
Global acceleration traffic: The traffic generated by data transfer with acceleration domains after global acceleration is enabled.
How is the public network downstream traffic in COS generated and billed?
Public network downstream traffic is traffic generated by data transfer from COS to the client over the Internet. Traffic generated by downloading an object directly through an object link or by browsing an object through a static website access node is public network downstream traffic. For more information on billing for such traffic, see Billable Items and Product Pricing.
Will I be charged for public network downstream traffic generated by downloading files through the COS console, tools, API, or SDK?
The traffic (private or public network traffic) generated by accessing COS is subject to the use case, and only access to COS from a Tencent Cloud product in the same region will be over the private network by default, with no public network downstream traffic fees incurred. For more information on how to identify private network access, see Overview > Private Network Access.
What is public network traffic in COS?
Public network downstream traffic is the traffic generated by data transfer from COS to the client over the internet. Downloading a file stored in COS in the COS console, accessing or downloading an object through a tool, object address, or custom domain name, and previewing an object in a browser will generate public network downstream traffic. For more information, see Overview.
Will accessing COS over the private network incur fees?
Accessing COS over the private network will incur storage usage fees and request fees but not traffic fees. For more information, see Billable Items.
How will COS be billed after it is connected to CDN?
After COS is connected to CDN, the fees incurred by COS and CDN will be billed separately.
COS fees include storage usage fees, request fees, and CDN origin-pull traffic fees.
CDN fees include CDN traffic fees.
Why is there public network downstream traffic after I enabled CDN acceleration?
It may be because you are still using the COS origin domain name formatted as <BucketName-APPID>.cos.<region>.myqcloud.com to access COS files after you enabled CDN acceleration. We recommend that you use the CDN acceleration domain name instead, which only generates CDN origin-pull traffic.
What is CDN origin-pull traffic in COS? How is it generated?
CDN origin-pull is to pull data from COS to the cache node by CDN when a file not cached on a CDN edge node is accessed at a CDN domain name.
Note:
CDN origin-pull will incur origin-pull traffic fees. For more information, see Traffic Fees.
How is the CDN origin-pull traffic billed in COS?
CDN origin-pull traffic is the traffic generated by data transfer from COS to a Tencent Cloud CDN edge node. After CDN acceleration is enabled, traffic generated by browsing or downloading COS data on the client at a CDN acceleration domain name is CDN origin-pull traffic. For billing details, see Billing Overview and Pricing | Cloud Object Storage.
What are the differences between CDN origin-pull traffic and CDN traffic?
CDN origin-pull traffic is a billable item in COS. It is the origin-pull traffic generated by data transfer from COS to the CDN edge node when COS is used as the CDN origin.
CDN traffic is a billable item in CDN. It is the traffic generated by data transfer from a CDN edge node to the client.
Will fees be charged for traffic and requests generated by data transfer between COS and CVM?
When data transfer happens between COS and CVM from different regions, there are charges for both traffic and requests. When data is transferred in the same region, there are charges for requests, but not for traffic (free for data transfer over private network). For more information, see How to determine access over private network.
Will there be traffic fees when I upload a file to a COS bucket?
No. The upstream traffic generated by file uploads is free of charge.
Will there be traffic fees when I access Tencent Cloud products in the same region?
Tencent Cloud products within the same region access each other over the private network by default, with no traffic fees incurred. For more information, see How to determine an access over private network.
What is traffic anti-fraud in COS?
1. Feature Overview
COS supports the Hotlink Protection feature. The system intelligently detects abnormal traffic, automatically blocks abnormal buckets, and sends notifications. To avoid a high bill due to abnormal traffic before auto-blocking, refer to Hotlink Protection Guide to implement protective measures.
Intelligent detection is described as follows:
The system makes comprehensive judgment based on recent traffic changes in the buckets. Not all traffic increases are considered abnormal.
Abnormal traffic occurs before intelligent detection starts, so it cannot be detected in advance.
If a bucket has abnormal traffic before it is blocked, the traffic will be reflected in the bill, and the fees will be borne by the user.
Upon receiving a notification, whether blocking is caused by abnormal traffic or anticipated traffic increases, please contact us for unblocking.
Note:
If the bucket access permission is set to Public Read (Public Read/Private Write or Public Read/Write), the hotlink risk is extremely high. It is recommended to take measures to avoid unexpected fees. Refer to Hotlink Protection Guide.
When a bucket is created, COS informs you of the billing risks and receives your confirmation. If fees arise from the Public Read permission for the bucket, no configuration of hotlink protection, etc., they will be borne by the user.
2. Scope of Application
The traffic anti-hotlinking feature is a system policy that automatically carries out intelligent detection for each user.
3. Allowlist
If you do not need the traffic anti-hotlinking feature, after critically assessing the related risks and confirming that the risks are bearable, provide the bucket name and contact business personnel or contact us to apply for a Traffic anti-hotlinking allowlist. After being added to the allowlist, your bucket will no longer undergo anti-hotlinking detection.
4. Notification Logic
If the system detects abnormal total traffic growth of a bucket for a day, to reduce the high traffic costs caused by unexpected public network downstream traffic, COS will block the bucket and send a notification.
Note:
1. Total traffic of the bucket for the day: total traffic generated in the duration from 00:00 of the day to the detection time.
After the bucket is blocked due to hotlinking, take the following measures to ensure normal access to the bucket:
Self-service unblocking is not supported. After receiving the <Account Blocked for COS Data Hotlinking>, contact us as soon as possible for unblocking, so as to ensure normal access to the bucket.
You can log in to the COS console to view the bucket's traffic monitoring and configure the bucket's permissions and alarm policies as needed.
Bill
How do I view my bill?
You can view the fees incurred by the use of COS under your account in the Billing Center in the console. For more information, see Viewing and Downloading Bill. You can view bucket-level bill details by downloading the usage details in the Billing Center.
How do I download a bill?
Log in to the Tencent Cloud console, select Billing Center > Bill Download Center, and download the target bill packages, PDF bills (L0), bill summary (L1), bills by instance (L2), and bill details (L3). For more information, see Bill Download Center.
What are billing by bucket and cost allocation by tag?
Billing by bucket: It refers to using the bucket name and APPID together as the resource ID and using the bucket name as the instance name, i.e., generating bills by bucket. You can view the fees and usage of billable items by bucket.
Cost allocation by tag: You can specify cost allocation tags to differentiate resources by category.
How do I set billing by bucket and cost allocation by tag?
COS supports billing by bucket and cost allocation by tag.
Billing by bucket: Contact your sales rep to add your account to the allowlist of the billing by bucket feature. This feature will take effect for new bills the next day after approval, while historical bills will remain unchanged.
Cost allocation by tag: Tag your buckets, set cost allocation tags, and contact your sales rep to add your account to the allowlist of the billing by bucket feature.
Note:
After your account is added to the allowlist, billing by bucket will take effect only for new bills, while existing bills will remain unchanged. In addition, you cannot go back to the previous billing option.
How do I determine whether bills are generated by bucket?
You can determine this in two ways:
Option 1: Select Billing Center > Billing Details and view Bill by Instance and Bill Details. If the Resource Alias/ID is a bucket name and APPID, billing by bucket has been enabled.
Option 2: Select Billing Center > Bill Download Center and download bill details (L3). If the Resource ID is a bucket name and APPID and Instance Name is a bucket name, billing by bucket has been enabled.
Below are the effects after billing by bucket is enabled:
(1) Bill by instance
(2) Bill details
(3) Bill details (L3)
Note: After the billing by bucket feature of COS is fully launched, on the Cost Allocation - Month sheet in the usage details, the bucket cost allocation information won't be displayed, while other information stays unchanged. For specific bucket fees, download the L2 or L3 bill.
How is the billing by bucket feature of COS launched?
The billing by bucket feature of COS was made available through an allowlist starting from October 28, 2022 as follows:
If you had applied to add your UIN to the allowlist of the billing by bucket feature, the Resource ID and Instance Name columns in the bill would change, where the Resource ID is a bucket name + APPID and Instance Name is a bucket name.
If you hadn't applied to add your UIN to the allowlist of the billing by bucket feature, billing would stay unchanged.
Starting from February 1, 2023, the feature was made available to users in batches by UIN as follows:
Launch Date
Description
Bill Description
October 28, 2022
Feature launch - through allowlist.
(1) Billing stayed unchanged for users not in the allowlist.
(2) Billing by bucket was enabled for users in the allowlist.
February 1, 2023
Before full launch - allowed account verification.
(1) Billing stayed unchanged for users not in the allowlist.
(2) Billing by bucket was enabled for users in the allowlist.
February 6, 2023
Batch 1 launch - for UINs ending in 9
(1) Billing by bucket was enabled for users in the allowlist and with UINs ending in 9.
(2) Billing stayed unchanged for other users.
February 20, 2023
Batch 2 launch - for UINs ending in 2
(1) Billing by bucket was enabled for users in the allowlist and with UINs ending in 9 or 2.
(2) Billing stayed unchanged for other users.
March 7, 2023
Batch 3 launch - for UINs ending in 3
(1) Billing by bucket will be enabled for users in the allowlist and with UINs ending in 9, 2, or 3.
(2) Billing will stay unchanged for other users.
March 14, 2023
Batch 4 launch - for UINs ending in 4
(1) Billing by bucket will be enabled for users in the allowlist and with UINs ending in 9, 2, 3, or 4.
(2) Billing will stay unchanged for other users.
March 21, 2023
Batch 5 launch - for UINs ending in 5
(1) Billing by bucket will be enabled for users in the allowlist and with UINs ending in 9, 2, 3, 4, or 5.
(2) Billing will stay unchanged for other users.
How do I view the billing statistical period?
Log in to the Tencent Cloud console, select Billing Center > Bill Overview, and view the billing statistical period of your account.
What are billing by deduction cycle and billing by billing cycle?
Billing by deduction cycle: The system generates a bill per calendar month based on the resource fees deduction time.
Billing by billing cycle: The system generates a bill per calendar month based on the actual resource usage time.
What is the relationship between the billing mode and billing statistical period?
COS adopts the pay-as-you-go (postpaid) billing mode.
Pay-as-you-go (postpaid) resources
Daily settled resources: Fees incurred from 00:00 to 23:59 on January 31 will be deducted on February 1. The record will be posted to the bill for February by deduction cycle and to the bill for January by billing cycle.
Monthly settled resources: Fees incurred from 00:00 on January 1 to 23:59 on January 31 will be deducted on February 1. The record will be posted to the bill for February by deduction cycle and to the bill for January by billing cycle.
For more information on billing cycles, see Bill Management.
Why did the amount of the bill (by deduction cycle) of the first month “increase” after the upgrade from monthly to daily settlement?
Starting from July 1, 2022, the settlement cycle of COS storage usage, request, and data retrieval fees was upgraded from monthly to daily to help you manage fees in a more refined manner. The upgrade was implemented on user accounts in batches and went through a two-month beta test. The release dates of different bill statistical periods are as listed below. For more information, see Daily Billing for COS Storage Usage, Request, and Data Retrieval and Bill Management.
Release Date
Release Note
Bill Description
July 1, 2022
The first release for the first batch of accounts in beta test
(1) Resources were settled monthly before July 1, 2022. Fees incurred from 00:00 on June 1 to 23:59 on June 30 were deducted on July 1. The record was posted to the bill for July by deduction cycle and to the bill for June by billing cycle.
(2) Resources were settled daily after July 1, 2022. Fees incurred from 00:00 to 23:59 on July 1 were deducted on July 2. The record was posted to the bill for July 2 by deduction cycle and to the bill for July 1 by billing cycle.
August 1, 2022
The second release for the second batch of accounts in beta test
(1) Resources were settled monthly before August 1, 2022. Fees incurred from 00:00 on July 1 to 23:59 on July 31 were deducted on August 1. The record was posted to the bill for August by deduction cycle and to the bill for July by billing cycle.
(2) Resources were settled daily after August 1, 2022. Fees incurred from 00:00 to 23:59 on August 1 were deducted on August 2. The record was posted to the bill for August 2 by deduction cycle and to the bill for August 1 by billing cycle.
September 1, 2022
The third release for all accounts
(1) Resources were settled monthly before September 1, 2022. Fees incurred from 00:00 on August 1 to 23:59 on August 31 were deducted on September 1. The record was posted to the bill for September by deduction cycle and to the bill for August by billing cycle.
(2) Resources were settled daily after September 1, 2022. Fees incurred from 00:00 to 23:59 on September 1 were deducted on September 2. The record was posted to the bill for September 2 by deduction cycle and to the bill for September 1 by billing cycle.
Therefore, if the monthly usage remained the same, after monthly settlement was upgraded to daily settlement, the bill amount varied by billing statistical period and billable items as follows:
Billing by billing cycle: The monthly fees of storage usage, requests, and data retrievals remain basically unchanged after the upgrade.
Billing by deduction cycle: The monthly fees of storage usage increase after the upgrade, while the monthly fees of requests and data retrievals remain basically unchanged after the upgrade.
In the first month after the upgrade from monthly settlement to daily settlement, the storage fees increased. This was because two bills were generated for billing by deduction cycle. The first bill was the monthly bill for the last month, while the second bill was the daily bill for the current month. Therefore, the bill amount seemed to have increased, but no additional fees were deducted in fact, which was normal under the settlement and billing logic.
In the second month after the upgrade from monthly settlement to daily settlement, your bills were settled daily, and the bill amount "decreased" compared with that in the first month, which was also normal under the settlement and billing logic.
For example:
Your account is billed by deduction cycle and was upgraded from monthly settlement to daily settlement on September 1, 2022, and you downloaded the bill details (L3) of COS in the Billing Center on September 30.
Taking the COS STANDARD storage usage billable item as an example, the bills consisted of the monthly bill for August and daily bill for September as detailed below:
Pay-as-you-go monthly settlement: The monthly bill was generated on September 1 for resource usage fees incurred in the entire August (from 00:00 on August 1 to 23:59 on August 31).
Pay-as-you-go daily settlement: After the upgrade from monthly settlement to daily settlement on September 1, a daily bill was generated on each day starting from September 2 for daily resource usage fees incurred in the entire September. The bill generated on September 2 was for fees incurred from 00:00 to 23:59 on September 1, that on September 3 was for fees incurred from 00:00 to 23:59 on September 2, and so on.
As there was too much bill data, only the daily bills for September 2–3 are listed below:
Therefore, if your monthly fees increased in the first month after the upgrade from monthly settlement to daily settlement and your bill was generated by deduction cycle, the increase was normal under the settlement and billing logic, and no additional fees were deducted in fact. If you have any questions, contact us for assistance.
Why are there daily and monthly settlement modes in the transaction details?
Before the upgrade, COS' storage, requests, STANDARD_IA data retrievals, and ARCHIVE data retrievals are settled monthly, and their monthly settlement details are displayed in the transaction details, while DEEP ARCHIVE data retrievals, traffic, and management features are still settled daily, and their daily settlement details are still displayed in the transaction details. After the upgrade, all COS billable items are settled daily. For more information, see Billing Overview.
In addition, you can view the L3 bill to check whether the billable items are settled daily or monthly as instructed in Billing.
Fee Deduction
Will I be charged immediately after activating COS?
Activating COS is free of charge, and fees will be incurred only after you use it. For billing details, see Billing Overview.
If you upload multiple files in a total size of 1 GB to the STANDARD storage class after activating COS and then view and download them, STANDARD storage, write requests, public/private network upstream traffic, and public network downstream traffic (of about 1 GB) will be generated, and the bill generated on the next day will include the STANDARD storage, STANDARD write request, and public network downstream traffic fees. As the public/private network upstream traffic is free of charge, it will not be included in the bill.
Will file uploads to COS incur fees?
When you upload a file to COS, the generated traffic is free of charge, but the generated write request will incur fees, and the storage usage fees will be calculated based on the file size. If you access or download the object over the public network, public network downstream traffic fees will be incurred. For billing details, see Billing Overview and Pricing | Cloud Object Storage.
Why are fees still deducted after my data in COS is deleted?
If you no longer use the COS service, you need to delete all the buckets under your account. Double check whether all the buckets have been deleted. If fees are still incurred after all the buckets are deleted, they may be the daily fees incurred on the previous day. COS storage usage fees and request fees are billed daily, that is, a bill generated on the current day is for usage on the previous day. You can go to the transaction details page and click Details on the right of a billable item to view fee deduction details.
The details about the change from monthly settlement to daily settlement are as follows: Starting from July 1, 2022, the settlement cycle of COS storage usage, request, and data retrieval fees was upgraded from monthly to daily to help you manage fees in a more refined manner. The upgrade was implemented on user accounts in batches and went through a two-month beta test. The release dates of different bill statistical periods are as listed below. For more information, see Daily Billing for COS Storage Usage, Request, and Data Retrieval and Bills.
How do I deactivate the COS service and stop being charged?
You can deactivate COS or stop its billing as follows:
1. If you decide to stop using COS, you can avoid any further billing by permanently deleting all of your COS data (including incomplete multipart uploads and object versions) as instructed in Payment Overdue. There is no need to remove your account, and if you use other Tencent Cloud products, avoid doing so as it will affect your other services.
2. If you don't use COS for more than one month, you can set lifecycle rules to transition data in STANDARD storage class in the bucket to a colder class such as STANDARD_IA, ARCHIVE, or DEEP ARCHIVE to reduce storage fees. For more information, see Setting Lifecycle. The transition will generate read requests in the original storage class and write requests in the target storage class, so transition by lifecycle will incur read/write request fees.
Notes
Data, once deleted from the bucket, cannot be recovered, so make backups accordingly.
If versioning is enabled for the bucket, disable it before deleting data.
Check your billing cycle to avoid overdue payments. If all your billable items are settled daily, the bill for the day of data deletion will be generated on the next day. After the data is completely cleared, the system will stop billing. For more information, see Billing Cycle.
If your account has overdue payment (i.e., your account balance is below 0), COS services will be suspended after 24 hours, regardless of whether your resource pack is within the validity period.
If your account has overdue payment and COS services are suspended, the free tier for which your account is eligible won't be available.
If data in your bucket is blocked for the second time due to non-compliance, it cannot be deleted. Contact us if you have any questions.
How will I be charged when storing data in STANDARD_IA for less than 30 days?
The minimum data storage duration in STANDARD_IA storage class is 30 days.
Below are the specific rules:
An object stored less than 30 days is billed by 30 days as described in Storage Usage Fees.
An object stored more than 30 days is billed by the actual storage duration.
For more information, see "STANDARD_IA storage usage fees" and "Billing Mode and Calculation Formula" in Storage Usage Fees.
How will I be charged when storing data in ARCHIVE for less than 90 days?
The minimum data storage duration in ARCHIVE storage class is 90 days.
Below are the specific rules:
An object stored less than 90 days is billed by 90 days as described in Storage Usage Fees.
An object stored more than 90 days is billed by the actual storage duration.
For more information, see "ARCHIVE storage usage fees" and "Billing Mode and Calculation Formula" in Storage Usage Fees.
How will I be charged when storing data in DEEP ARCHIVE for less than 180 days?
The minimum data storage duration in DEEP ARCHIVE storage class is 180 days.
Below are the specific rules:
An object stored less than 180 days is billed by 180 days as described in Storage Usage Fees.
An object stored more than 180 days is billed by the actual storage duration.
For more information, see "DEEP ARCHIVE storage usage fees" and "Billing Mode and Calculation Formula" in Storage Usage Fees.
What are data retrieval fees in COS?
Data retrieval fees are fees incurred by reading or downloading MAZ_STANDARD_IA/STANDARD_IA data or restoring ARCHIVE or DEEP ARCHIVE data to STANDARD. They are calculated based on the amount of retrieved data. The higher the amount, the higher the fees. If you don't have special storage needs, you can directly use STANDARD, which doesn't involve data retrieval fees.
What fees will be incurred by copying MAZ_STANDARD_IA/STANDARD_IA data?
Copying MAZ_STANDARD_IA/STANDARD_IA data will incur request fees and data retrieval fees and may also incur cross-region replication traffic fees if the destination and source files are in different regions.
Will I be charged for a copy generated by restoring ARCHIVE or DEEP ARCHIVE data in COS?
A copy generated by restoring ARCHIVE or DEEP ARCHIVE data is in the STANDARD storage class and will incur STANDARD storage usage fees.
How will I be charged for less than 10,000 read/write requests?
The read/write requests are priced by storage class and billed based on the actual quantity, with a minimum billable quantity of 10,000. For more information, see Pricing | Cloud Object Storage and Request Fees.
Why are the COS read/write request fees zero?
If the number of requests does not reach the minimum value for fee deduction, the request fees will be zero.
Case study: If 23 STANDARD read requests for your data stored in the STANDARD storage class in a bucket in Beijing region were made in December 2021, the unit price of STANDARD read/write requests was 0.002 USD/10,000 requests, and your account wasn't entitled to any discount, then the STANDARD read request fees were 0.0023 * 0.002 = 0.0000046 USD. As fee deduction is accurate down to two decimal places, your request fees for the month were 0 USD.
Cause: As bills support eight decimal places at most, while fee deduction is accurate down to two decimal places, the system will automatically adjust the accuracy difference. For more information, see Bills.
Why Are There STANDARD Storage Request Fees in My Bill When MAZ_STANDARD in COS Is Used?
While the storage pricing for the STANDARD and MAZ_STANDARD storage in the same region differs, the pricing for read/write requests remains the same. If you use MAZ_STANDARD and some bucket-related requests are generated, the system calculates the usage based on STANDARD read/write requests. As a result, STANDARD storage read/write request fees will be incurred in your bill.
Overdue Payment and Service Suspension
Can I still access and download files in the COS console if my COS service is suspended due to overdue payment?
After the COS service is suspended due to overdue payment, you cannot read or write data from or to COS, but you can top up your account. For more information, see Payment Overdue.
Why can't I use the COS service after topping up my account to a positive balance?
Your account will be automatically unblocked in 10 minutes after it is topped up. If your account is still displayed as blocked, the browser may have cached the historical page. In this case, we recommend you refresh the webpage or clear the browser cache first.
Notice About the Change in Service Suspension Policy for Overdue COS Pay-As-You-Go (Postpaid) Payment
How is the PowerPoint-to-image conversion in COS' document processing service billed? Will fees be incurred if I access an object that I have accessed before?
The document processing service is offered by CI, so its fees are also charged by CI. Fees will be incurred for every request; that is, fees will be deducted every time you refresh the URL. For more information, see Document Processing Fees.
Others
How will I be charged for migrating data from another cloud to COS?
When you migrate data from another cloud to Tencent Cloud COS, outbound traffic fees will be charged by your source cloud storage vendor. The write traffic generated by migration to Tencent Cloud is free of charge, but storage usage and request fees will be incurred. For COS billing details, see Billing Overview.
What fees will be incurred by accessing COS through a URL?
Yes
No
Was this page helpful?