Backblaze B2 vs Cloudflare R2: Free Tier Comparison
Side-by-side comparison of free tiers, pricing changes, and stability. Catalogue dates here run to 2026-09-24.
Quick Verdict: Which one is cheaper depends on how much you read relative to what you store. Backblaze B2 stores at $6.95/TB/30-day and gives every account free egress up to 3x its average monthly storage, so a workload inside that ratio pays $6.95 per TB against Cloudflare R2's $15 — no CDN required. Past roughly 3.8x egress-to-storage, R2's flat zero-egress rate wins and keeps winning. Both offer 10 GB free storage with S3 compatibility.
Object storage with zero egress fees — 10 GB storage, 1M writes, 10M reads/month free
Key Differences
Egress: R2 has zero egress fees — always, at every ratio. B2's egress is free up to 3x average monthly storage, $0.01/GB above that, and unmetered through a partner CDN (Cloudflare, Fastly, bunny.net and others). R2's model is simpler to predict; B2's is cheaper until reads reach about 3.8x storage.
Free tier: Both offer 10 GB free storage. R2 includes 1M writes and 10M reads/month. B2 makes Class A, B and C API calls free on pay-as-you-go.
At scale: At 1 TB stored + 1 TB egress, B2 costs $6.95/month against R2's $15 — the read is inside B2's allowance and costs nothing to serve. Raise the read to 10 TB against the same 1 TB stored and it flips: B2 is $76.95 (3 TB free, 7 TB at $0.01/GB) against R2's unchanged $15.
Ecosystem: R2 integrates natively with Cloudflare Workers, Pages, and the broader Cloudflare ecosystem. B2 is a standalone storage service.
Pricing Change History
Backblaze B2
No recorded pricing changes for Backblaze B2.
Cloudflare R2
No recorded pricing changes for Cloudflare R2.
Our Recommendation
Choose Cloudflare R2 if your reads far outrun your storage — streaming, downloads, a viral static asset — or you are already in the Cloudflare ecosystem and want one rate to reason about at any ratio.
Choose Backblaze B2 if your egress stays within a few multiples of what you store, which covers most archives, backups and application storage: it is less than half R2's price there. Also if you already use Backblaze for backups or need their B2 lifecycle rules.
Is Backblaze B2 or Cloudflare R2 better for free tier?
Which one is cheaper depends on how much you read relative to what you store. Backblaze B2 stores at $6.95/TB/30-day and gives every account free egress up to 3x its average monthly storage, so a workload inside that ratio pays $6.95 per TB against Cloudflare R2's $15 — no CDN required. Past roughly 3.8x egress-to-storage, R2's flat zero-egress rate wins and keeps winning. Both offer 10 GB free storage with S3 compatibility.
What is Backblaze B2's free tier?
Backblaze B2 offers a Free Allowance plan: Object storage — first 10 GB always free, free egress up to 3x average monthly storage, unmetered via CDN partners
What is Cloudflare R2's free tier?
Cloudflare R2 offers a Free plan: Object storage with zero egress fees — 10 GB storage, 1M writes, 10M reads/month free
Should I choose Backblaze B2 or Cloudflare R2?
Choose Cloudflare R2 if your reads far outrun your storage — streaming, downloads, a viral static asset — or you are already in the Cloudflare ecosystem and want one rate to reason about at any ratio. Choose Backblaze B2 if your egress stays within a few multiples of what you store, which covers most archives, backups and application storage: it is less than half R2's price there. Also if you already use Backblaze for backups or need their B2 lifecycle rules.
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