Traffic fees
Updated at：2025-11-03
Traffic fees are the base costs for BOS. When accessing files stored in BOS, traffic fees are charged depending on usage scenarios.
| Category | Sub-charge item | Charge type | Payment type |
|---|---|---|---|
| Traffic fees | Internet egress traffic | Internet data egress refers to the traffic that flows out through an internet (non-Baidu intranet) IP when you use BOS (excluding traffic generated by CDN back-to-origin). For example, when you download files locally or share them with others via the internet, the system settles the internet data egress fees per hour. | Pay-as-you-go and resource package charge |
| Internet ingress traffic | Free | - | |
| Intranet egress traffic | Free | - | |
| Intranet ingress traffic | Free | - | |
| Egress traffic generated by CDN back-to-origin requests | Fees incurred when pointing to Baidu AI Cloud CDN back-to-origin. Other non-Baidu AI Cloud CDN back-to-origin cannot be identified, and are charged according to standard Internet data egress. The system settles CDN back-to-origin egress fees per hour. | Pay-as-you-go and resource package charge | |
| Cross-region egress traffic | If you use cross-region replication of files (e.g., synchronizing files from the North China - Beijing region to the South China - Guangzhou region), cross-region egress traffic fees will be incurred. If you use the cross-account synchronization function and the source bucket and destination bucket are in different regions, the cross-region traffic fees will be borne by the account to which the source bucket belongs. The system will settle the cross-region replication data egress fee once per hour. | Pay-as-you-go | |
| CDN uplink acceleration | When you enable BOS’s CDN uplink acceleration function, BOS does not charge fees (i.e., this item will not be included in your BOS bill), but Baidu AI Cloud CDN service will charge corresponding fees. BOS’s CDN uplink acceleration is a function developed based on Baidu AI Cloud CDN dynamic acceleration function, specifically for BOS uplink scenarios. If you enable this function, the corresponding fees for the function will be included in your CDN bill. For detailed charge information, please refer to the CDN Dynamic Acceleration Charge Document. | Pay-as-you-go, CDN dynamic acceleration PV package |