# Amazon S3 vs Cloudflare R2 (slim)

> Amazon S3 has a score of 79.3 (A) against Cloudflare R2's 78.4 (A). Both do storage object. The largest gap is reliability, 13 points. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/amazon-s3-vs-cloudflare-r2.md (~1,500 tokens) · this version ~330 tokens · JSON https://www.anchorterminal.com/compare/amazon-s3-vs-cloudflare-r2.json · canonical https://www.anchorterminal.com/compare/amazon-s3-vs-cloudflare-r2
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

Amazon S3 has a score of 79.3 (A) against Cloudflare R2's 78.4 (A). Both do storage object. The largest gap is reliability, 13 points.

- Amazon S3: A 79.3, rank #9 of 452 · https://www.anchorterminal.com/tools/amazon-s3.min.md
- Cloudflare R2: A 78.4, rank #14 of 452 · https://www.anchorterminal.com/tools/cloudflare-r2.min.md
- Pick Amazon S3 for reliability (+13), transparency & trust (+5). Pick Cloudflare R2 for agent ergonomics (+7), payments & pricing (+10).

| Category | Amazon S3 | Cloudflare R2 |
| --- | --- | --- |
| Reliability (16%) | 95 | 82 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 92 | 92 |
| Agent ergonomics (13%) | 83 | 90 |
| Security & auth (14%) | 86 | 83 |
| Payments & pricing (10%) | 20 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 83 | 87 |
| Transparency & trust (7%) | 80 | 75 |