R2 Storage API

Cloud / Storage

Cloudflare

S3-compatible object storage with zero egress fees and global edge caching

Reported Latency

Typical performance from public reports -- not live measurements

Average: 55ms

p50

38ms

p95

130ms

p99

250ms

99.99%observed uptime

Free tier

10 GB storage, 10M reads, 1M writes/month

Paid starts at

$0.015 / GB / month

Authentication

API Key / S3 Auth

Rate limit

Unlimited (fair use)

Protocols

REST (S3-compatible)

SDKs

Any S3-compatible SDKWorkers Binding

Regions

Global (edge-distributed)

Last updated: 2026-04-12