Backblaze B2
A low-cost S3-compatible cloud storage service with free egress to CDN partners through the Bandwidth Alliance, designed for cost-effective bulk storage.
Summary
A low-cost S3-compatible cloud storage service with free egress to CDN partners through the Bandwidth Alliance, designed for cost-effective bulk storage.
B2 occupies the budget tier of S3-compatible cloud storage. Its low per-GB pricing and free egress to partners (Cloudflare, Fastly) make it attractive for backup, archive, and media delivery workloads where cost dominates.
- B2 is not AWS S3. Some S3 features are missing or behave differently. Performance characteristics, request rate limits, and consistency guarantees differ from AWS.
- Free egress only applies to Bandwidth Alliance partners. Direct internet egress has standard charges.
implementsS3 API — S3-compatible interfacesolvesEgress Cost — free egress to CDN partnerssolvesVendor Lock-In — S3-compatible alternative to AWS
Definition
Low-cost S3-compatible cloud object storage with transparent pricing and zero egress to Cloudflare, Fastly, and other CDN partners via the Bandwidth Alliance.
S3 storage and egress pricing is opaque and expensive at scale. B2 offers dramatically lower per-GB storage costs and free egress to partner networks, making it attractive for archival and media-heavy workloads.
Low-cost archival storage, media asset management, S3-compatible backup target, budget-friendly data lakes.
Recent developments
Backblaze B2 Neo wins NAB Show 2026 Product of the Year. Per Backblaze's announcement (April 27, 2026), the new B2 Neo tier targets media and post-production workloads — the NAB (National Association of Broadcasters) award signals editorial validation in the M&E vertical, which has historically been the largest off-AWS object-storage market for video archives. For organizations evaluating self-hosted vs cloud archival of large media files, B2 Neo is now the highest-profile reference architecture choice in the space outside of hyperscaler proprietary tiers.
B2 Pay-as-You-Go pricing: $6/TB/month with free egress up to 3× average monthly storage. Backblaze's own May 2026 pricing statement lists $6/TB/month storage, free uploads, the first 10 GB stored free, and $0.01/GB for downloads beyond the 3× free-egress allowance — contradicting third-party reports of a rise to $6.95/TB, and corroborated by independent 2026 comparisons quoting $0.006/GB. Per Transparency in Cloud Storage Costs: Still Elusive (Backblaze blog, May 2026).
Q1 2026 earnings put numbers on the AI-workload thesis: B2 +24% YoY, AI customers +76%, guidance raised (primary SEC filing). Total revenue $38.7M (+12% YoY) with B2 Cloud Storage at $22.4M growing twice the corporate rate; AI customer count up 76% YoY and expanding ~3× faster than the average customer per the CEO; ≥$50K-ARR customers up 51% to 187 (now 17% of ARR); full-year guidance raised to $161.5–163.5M; the market read the AI mix shift as durable (a CoreWeave partnership deal in the same window). For the index's purposes this is the cleanest public evidence that AI training/inference data is repricing the independent object-storage tier, not just hyperscaler capacity. Per Backblaze Q1 2026 8-K exhibit (SEC EDGAR) (primary) and Blocks & Files — Backblaze beats guidance as AI drives growth.
B2 runs from three regions — US West (Sacramento), US East (Phoenix), and EU Central (Amsterdam) — with no Schrems II mitigation, since Backblaze remains a US parent company subject to the CLOUD Act. Worth flagging for EU-data workloads evaluating B2 as an S3-compatible alternative. Per DanubeData — Backblaze B2 Alternatives in Europe (2026).
B2 Neo is a white-label, high-performance S3-compatible tier for media and AI workloads, launched February 2026 ahead of its NAB Show 2026 award. Per Backblaze — B2 Neo Wins NAB Show 2026 Product of the Year.
Backblaze reported 24% YoY growth in Q1 2026 and closed its first eight-figure TCV neocloud agreement, tracking toward free-cash-flow positive in Q4 2026 — a signal of institutional traction for B2 in AI/neocloud storage deals. Per Blocks & Files — Backblaze beats guidance as AI drives growth.
September 2026 pricing check: B2 pay-as-you-go lists at $6.95/TB/month with API transaction fees ELIMINATED (May 2026 update) — superseding the $6 figure above. Backblaze's own pricing page now shows $6.95/TB/month, free egress up to 3× stored data volume, $0 API fees, and no minimum retention or minimum billable storage (vendor-published). The API-fee elimination is the load-bearing change for AI workloads writing millions of small JSON logs or checkpoint shards — it removes a cost axis Wasabi never charged but hyperscalers do. The retention contrast matters for the KV-cache-tier pattern this index tracks: Wasabi's 90-day minimum retention (and 1 TB billing floor) makes it a poor fit for ephemeral cache objects, while B2's zero-retention-minimum shape supports them cleanly. Per Backblaze — B2 cloud storage pricing. Sources: Backblaze B2 Neo wins NAB Show 2026 Product of the Year (Backblaze blog, April 27, 2026)
Connections7
Outbound5
Inbound2
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Official B2 Cloud Storage documentation covering APIs, integrations, and storage management.
B2 S3-compatible API documentation enabling drop-in replacement for S3 workloads at lower cost.
S3 compatibility announcement explaining how B2 supports the S3 API for seamless migration from AWS.