Backblaze B2 vs Cloudflare R2
Both are alternatives to Amazon S3. Here's how they stack up — verified facts, no spin.
Also searched as Cloudflare R2 vs Backblaze B2 — same comparison, one verdict.
Backblaze B2
A quarter of S3's storage price, with free egress to partner networks.
B2 is about $0.006 per GB per month — roughly a quarter of S3 Standard — with free egress to Cloudflare and other Bandwidth Alliance partners and generous free egress otherwise. It is S3-API compatible and the company has published its storage-durability statistics for years, which is a level of transparency the hyperscalers do not match. For backups and archives specifically it is very hard to beat on price. It is proprietary and hosted, and the ecosystem around it is small compared with AWS.
Cloudflare R2
S3-compatible with zero egress fees — the direct answer to the complaint.
R2 is Cloudflare's object store and its defining feature is a deliberate attack on S3's pricing: storage around $0.015 per GB per month and no egress charges whatsoever. For anything read frequently over the internet — media, assets, public datasets — that single difference can turn a four-figure monthly bill into a two-figure one. It is S3-API compatible, so migration is largely a config change. It is proprietary and hosted, which is the honest trade, and it makes Cloudflare rather than Amazon the party you depend on.
Side by side
| Backblaze B2 | Cloudflare R2 | |
|---|---|---|
| Sovereignty Score | 42 | 40 |
| Open source | No | No |
| Self-hostable | No | No |
| Local-first | No | No |
| License | Proprietary (hosted service) | Proprietary (hosted service) |
| Pricing | About $0.006/GB/month storage; free egress to Bandwidth Alliance partners. Checked 2026-08-04. | About $0.015/GB/month storage. No egress charges. Free tier included. Checked 2026-08-04. |
Backblaze B2 edges it on the Sovereignty Score, but the right pick depends on the trade-offs below.
Backblaze B2
Strengths
- +Roughly a quarter of S3's storage price
- +Free egress to Cloudflare and other partner networks
- +S3-compatible API
- +Publishes real durability and drive-failure statistics
Trade-offs
- −Proprietary and hosted
- −Far smaller service ecosystem than AWS
- −Fewer regions, which matters for latency and residency
- −Not built for high-throughput analytics workloads
Cloudflare R2
Strengths
- +Zero egress fees — the single biggest cost difference in this category
- +S3-compatible API, so migration is mostly configuration
- +Cheaper storage than S3 as well
- +Integrates with Cloudflare Workers and the CDN
Trade-offs
- −Proprietary and hosted — you have swapped one vendor for another
- −Fewer surrounding services than S3's ecosystem
- −No deep-archive tier comparable to Glacier
- −Ties you into Cloudflare's platform decisions
Related alternative guides
Facts verified 2026-08-04. Licenses and pricing change — spotted something out of date? That's a correction we want.