Head-to-Head Comparison
Cloudflare R2 vs Backblaze B2 Pricing (2026)
B2 bills $6.95/TB with $0 API request fees, and its first 3x of stored data ships out free every month; past that, egress is $0.01/GB. R2 bills $15.00/TB, ships $0 egress worldwide with no allowance to burn through, but charges $4.50 per million Class-A writes past 1 million free a month. At 5 TB stored and 5 TB served the engine prices R2 at $74.85 and B2 at $34.75. B2's storage price wins the quiet-bucket case outright; R2's open egress wins the moment the download bar passes the 3x allowance, and on a write-heavy workload R2's request meter is the bill that actually moves.
Monthly Cost by Workload
Starter / Web App
🏆 B2 Cloud Storage saves ~$7.90/mo on this workload.
Growth / Backup
🏆 B2 Cloud Storage saves ~$80.35/mo on this workload.
Data Lake / Scale
🏆 B2 Cloud Storage saves ~$406.85/mo on this workload.
Side-by-Side Cost & Feature Matrix
| Feature / Pricing Dimension | R2 | B2 Cloud Storage |
|---|---|---|
| Vendor & Parent | Cloudflare | Backblaze |
| Storage Rate (USD/TB/mo) | $15.00 | $6.95 |
| Internet Egress (USD/TB) | $0.00 (Free) | $10.00 |
| Free Egress Policy | 100% Free / Unmetered | First 3x stored amount in egress free per month |
| Write Requests (PUT/LIST per 1M) | $4.50 | $0 (Free) |
| Read Requests (GET/HEAD per 1M) | $0.36 | $0 (Free) |
| S3 API Compatibility | ✓ Standard S3 API | ✓ Standard S3 API |
| Durability | 99.999999999% (11 9s) | 99.999999999% (11 9s) |
| Availability SLA | 99.99% | 99.9% |
| Object Lock (WORM) | ✓ Object Lock | ✓ Object Lock |
| Versioning | ✓ Supported | ✓ Supported |
| Sovereignty & Jurisdiction | Global Edge (US Cloud Act) | US & EU (Amsterdam) |
| Minimum Commitment | None | None |
| Datacenter Regions | automatic | US-West, EU |
Cost profile: where each provider wins
What R2 is good for
- ✓ $0 egress worldwide, unlimited by any allowance or alliance
- ✓ Edge network with native Cloudflare Workers bindings and instant cache
- ✓ 10 GB free storage plus monthly Class-A and Class-B free allowances
Constraints to plan around:
- ! Storage at $15.00/TB, roughly double B2's rate in this pair
- ! Class-A writes cost $4.50 per million after the 1 million free allowance
What B2 Cloud Storage is good for
- ✓ Cheapest storage in this pair at $6.95/TB per month
- ✓ Zero API request fees, so write-heavy jobs do not accumulate request charges
- ✓ Cloudflare Bandwidth Alliance: already-partnered egress out of the box
Constraints to plan around:
- ! Egress beyond the first 3x of stored data bills $0.01/GB
- ! Regions are US-West and EU only: no APAC buckets
Keep going with these two providers
Rate card, reference bill and the questions this comparison cannot fit.
Vendor guide B2 Cloud Storage: rates, billing rules and regions →Rate card, reference bill and the questions this comparison cannot fit.
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