Object storage · Comparison
Backblaze B2 vs Cloudflare R2
2 products compared side by side: what you pay for with each one first, then the five access facts, entry prices, recorded plan limits and the bottom line of each review. The evidence note under the table says how each product was checked.
Side by side
| Metric | Backblaze B2 | Cloudflare R2 |
|---|---|---|
| What you're paying for | Worth the priceHot S3-compatible storage at a flat $6.95 per TB a month, with read, write and list calls free and egress free up to 3x what you store. | Worth the priceS3-compatible storage where downloads carry no egress fee, so serving or moving data out costs only the requests it takes. |
| Overall score | 8.6Best | 8.1 |
| Free option | Free plan | Free plan |
| Card to start | No card needed | –Not measured |
| Getting access | Self-serve | Self-serve |
| Starter priceCheapest paid plan | $6.95/TB/mo | $0.015/GB-month |
| Pricing model | Usage-based | Usage-based |
| Pricing page | Public prices | Public prices |
| Standard storage price | $6.95/TB per 30 days, billed per byte-hour; same in all 4 regions | $0.015/GB-month |
| Egress to the internet | Free up to 3x average stored data, then $0.01/GB; free to listed CDN and compute partners | No egress fee for any storage class |
| Request fees | Class A, B and C calls free; event notifications (Class D) $0.004 per 10,000 after 2,500 a day | Class A $4.50 per million; Class B $0.36 per million |
| Free option | First 10 GB always free, no credit card | 10 GB-month, 1 million Class A and 10 million Class B a month, permanent |
| Reference scenario (1 TB/mo) | $6.95, egress and calls free within the rules, computed | $23.10, no egress charge, computed |
| Billing minimums | None stated (no minimum file size, storage duration or monthly charge) | None on Standard; 30 days on Infrequent Access |
| S3 API | S3-compatible, next to the B2 Native API | S3-compatible; versioning, Object Lock and replication calls not implemented |
| Versioning and object lock | Versioning on by default; compliance-mode Object Lock | No versioning; R2 bucket locks the account can remove |
| Replication | Cloud Replication within or between regions (another region needs a second account) | No built-in replication |
| SOC 2 / ISO 27001 | Own SOC 2 Type 2 report; ISO 27001 held by its data centres | Cloudflare SOC 2 Type II names R2; ISO 27001:2022 |
| HIPAA BAA | On request for covered entities | Enterprise customers only |
| Regions | 4 (US East, US West, EU Central, CA East); one per account | 6 location hints (best effort); EU, US and FedRAMP jurisdictions |
| Bottom line | From its public pages, Backblaze B2 has the lowest list price in our 1 TB scenario, with free API calls, egress free up to 3x storage and solid data protection. Each account sits in one of 4 regions, with one storage class. | From its public pages, Cloudflare R2 removes the egress fee and keeps billing simple, with a permanent free tier and no minimums on Standard. Versioning, the S3 Object Lock API and replication are not implemented, so it suits serving data more than strict retention. |
Evidence: Backblaze B2: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run; Cloudflare R2: facts checked 2026-10-15 from its public sign-up and pricing pages, no completed hands-on run. Prices in USD as listed, excluding tax. "–" means not recorded.
When to pick each
In the words of each review, with the date its facts were checked.
From our Backblaze B2 review
Checked Oct 15, 2026- Pick Backblaze B2 when
- You need object versioning and a lock no user can remove, or you download less than 3x what you store.
- Pick Cloudflare R2 when
- Your downloads run well above 3x what you store: R2 charges no egress fee for any storage class.
From our Cloudflare R2 review
Checked Oct 15, 2026- Pick Cloudflare R2 when
- Downloads may exceed 3x what you store, or your code runs on Cloudflare Workers.
- Pick Backblaze B2 when
- You want the lowest scenario price here ($6.95), free Class A to C calls, versioning and compliance-mode Object Lock.
Entry price
Baseline: each product's cheapest paid plan, per month. Included usage differs, so read the line under each price.
- Backblaze B2B2 pay-as-you-go$6.95/TB/moBilled per byte-hour at $6.95/TB per 30 days for storage after the first 10 GB; card or invoice, monthly
- Egress free up to 3x average monthly storage, then $0.01/GB
- Class A, B and C calls free
- Event notifications (Class D): 2,500 a day free, then $0.004 per 10,000
- No minimum file size or storage duration
- Cloudflare R2Standard storage$0.015/GB-monthClass A $4.50 per million, Class B $0.36 per million, no egress fee, no minimum storage duration
- No minimum object size
- S3-compatible API and Workers API
- Usage rounded up to the next billing unit
- Requests rejected with 401 Unauthorized are not charged
Prices as listed on each pricing page, in USD per month, excluding tax. Observed: Backblaze B2 2026-10-15, Cloudflare R2 2026-10-15.
Which one fits
- If you need to start today without a sales call
- Backblaze B2Self-serve sign-up, no card needed; the highest score of the 2 self-serve products here (8.6/10).
- If you want to try it without entering a card
- Backblaze B2Free plan, no card needed; scored 8.6/10.
- Lowest starter price
- Cloudflare R2$0.015/GB-month for the Standard storage plan.
- Highest overall score
- Backblaze B28.6/10 (Excellent). The review shows the score breakdown and the run behind it.
Picked by fixed rules from the table above, not by hand. How we score
Full reviews
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