# Backblaze B2 Cloud Storage API vs Cloudflare R2

Page: https://free-web-services.com/compare/backblaze-b2-vs-cloudflare-r2/

| | [Backblaze B2 Cloud Storage API](https://free-web-services.com/web-services/web-development/hosting/backblaze-b2-cloud-storage-api.md) | [Cloudflare R2](https://free-web-services.com/web-services/web-development/hosting/cloudflare-r2.md) |
|---|---|---|
| Category | Hosting and storage | Hosting and storage |
| API key | Needed, free | Needed, free |
| Pricing | Free for the first 10 GB of storage; more storage is paid per GB. | Free each month for 10 GB of storage, 1 million write and 10 million read operations; usage above that is paid. |
| Formats | JSON | XML |
| Interface | REST, MCP | REST, MCP |
| Provider | backblaze.com | developers.cloudflare.com |
| Last checked | Working on November 1st, 2026 | Working on November 1st, 2026 |
| MCP server | Yes, official | Yes, official |

## Which one to choose

Both store files and speak the S3 API, so existing S3 tools work, and both have an official MCP server. Both keep 10 GB free; Cloudflare R2 also includes a million write and ten million read operations a month and charges nothing for outgoing data. For files served to many visitors, R2; for backups and storage you mainly write to, either fits.