Backblaze B2
S3-compatible always-hot object storage with a free tier and no credit card required to start.
- Card required
- No
Backblaze B2 scores 6.9/10 for free value in Storage. The main constraint: Free 10 GB object storage for unlimited time (per free-for-dev); free egress up to 3x stored data; no credit card to create an account.
Free value score
6.9 / 10Show the math
Key metrics
What you get
S3-compatible with API, CLI and broad integrations
No credit card required to get started
Free egress up to 3x stored data
Reported free 10GB object storage
Gotchas
- 10 GB free storage (monthly)
First 10 GB of object storage is always free, counted against monthly usage.
- Free egress capped at 3x stored data
Egress is free only up to 3x your monthly average storage; beyond that, overage is billed at $0.01/GB.
- 2,500 free Class D API calls/day
Class D transactions (e.g. b2_list_file_names) get 2,500 free calls per day; overages cost $0.004 per 10,000 calls.
- No premium support on free tier
Implementation support and premium support are paid add-ons; free-tier users get community/documentation support only.
- No B2 Overdrive (high-throughput tier)
The Overdrive tier (terabit speeds, dedicated vaults, unlimited egress) requires a multi-petabyte paid commitment and is unavailable on the free tier.
Sources
-
"First 10GB storage is always free."
https://www.backblaze.com/cloud-storage/pricing -
"All B2 Cloud Storage users get free egress up to 3x their average monthly storage. Your monthly average is calculated based on byte hours over the billing cycle. Egress beyond 3x is just $0.01/GB"
https://www.backblaze.com/cloud-storage/pricing -
"All new accounts start with a default limit of 500 requests per second for upload and download operations."
https://www.backblaze.com/docs/cloud-storage-rate-limits -
"Transactions Class D ... Cost: The first 2,500 of these calls are free each day, then $0.004 per 10,000"
https://www.backblaze.com/cloud-storage/transaction-pricing
