Backblaze B2
by Backblaze, Inc.
Low-cost, S3‑compatible object storage with free egress.
Score
Score
Our verdict
Backblaze B2 remains one of the most cost‑effective S3‑compatible object stores for backup, active archives, and application data. As of August 2026, pricing is straightforward at $6.95/TB/month with the first 10GB free, 3× free egress, and just $0.01/GB beyond that. Features like Object Lock, Cloud Replication with no transfer fees, Event Notifications, and SSE‑B2/SSE‑C encryption cover most enterprise needs, while the integrations catalog spans Veeam, Synology, Cloudflare, and more. Newer options such as B2 Overdrive ($15/TB/month) target AI/ML and high‑throughput media pipelines with unlimited free egress. The trade‑offs: it’s storage‑only (you’ll pair your own compute/CDN), premium support is an add‑on unless you buy Reserve, and AWS still leads in niche services and regional breadth. For most teams trying to rein in object storage spend without giving up essentials, Backblaze B2 delivers strong value and predictable bills.
Overview
Screenshot
Score breakdown
Overall score
Scores are editorial assessments by the Compare Best AI team on a 0–10 scale.
Expert review
CBAI Editorial Team
Compare Best AI · Editorial Team
## Overview
How we tested
Days tested
7 days
Tasks evaluated
- ·Upload and retrieve via S3 API using SSE‑C keys
- ·Configure Object Lock and verify retention/holds
- ·Set up Cloud Replication across regions and validate no‑fee transfers
- ·Measure egress via Cloudflare CDN origin pull against 3× allowance
Method
Compared against Wasabi and Amazon S3 using identical inputs
Reviewer
CBAI Editorial Team
Plans & pricing
Backblaze B2 (Pay‑As‑You‑Go)
Variable workloads from small teams to enterprises
- First 10GB storage free
- 3x free egress, then $0.01/GB
- Class A–C API calls free; Class D $0.004/10k (2,500/day free)
- No minimum file size or duration fees
B2 Overdrive
Throughput‑intensive AI/ML, HPC, and media pipelines
- Unlimited free egress
- Dedicated vaults and private networking integration
- White‑glove onboarding and support
B2 Reserve (Annual Bundles)
Predictable budgets and 20TB+ annual capacity
- All‑inclusive storage, egress, and transactions
- Universal Data Migration included with qualifying commitments
- Tera support (4‑business‑hour SLA)
- Bundles start at 20TB
Pricing may vary by region. Always verify on the vendor's website.
Feature comparison
| Feature | Backblaze B2 | Wasabi | Amazon S3 |
|---|---|---|---|
| Core | |||
| S3‑compatible API | |||
| Security | |||
| Object Lock (immutability) | |||
| Pricing | |||
| 3× free egress on metered plan | |||
| Requests | |||
| Free API requests (standard ops) | |||
| Replication | |||
| No‑fee multi‑region replication | |||
| Networking | |||
| Unlimited free egress via partners | |||
| Encryption | |||
| Server‑side encryption with customer keys | |||
| Free tier | |||
| Permanent 10GB free storage | |||
Is it right for you?
Good fit for
IT & Backup admins
Low, predictable storage with immutability and 3x free egress makes off‑site backups and DR economical without surprise fees.
Media teams
Active archives and CDN delivery benefit from S3 compatibility, Cloud Replication, and partner free‑egress; Live Read speeds edits.
Data & AI teams
Cost‑efficient dataset storage; Overdrive adds high throughput and unlimited egress for training and inference pipelines.
Startups & SMBs
Simple pricing ($6.95/TB/mo) and easy integrations reduce complexity versus hyperscalers.
Less suited for
One‑vendor cloud stacks
If you require integrated databases, serverless, and managed compute from the same vendor, B2 is storage‑only.
Ultra‑low‑latency edge delivery
Object storage isn’t a CDN; pair with a CDN partner for global edge latency needs.
Strict FedRAMP ATO needs
Backblaze lists GovRAMP Snapshot/TX‑RAMP; verify if you need full FedRAMP ATO today.
User reviews
Editorial score
Distribution is estimated from our editorial score. Verified user reviews coming soon.
Use cases
Typical ways teams rely on this tool — from everyday tasks to specialized workflows.
- Backup & DR
- Active media archive
- AI/ML dataset storage
- Application object storage
- Cost optimization vs hyperscalers
- Multi‑region compliance storage
Integrations
Reported connectors
Apps and services commonly connected out of the box or via official connectors.
- Veeam
- Cloudflare
- Synology
Privacy & compliance
Security & data practices
Highlights we track from the vendor's documentation. Always confirm current terms, subprocessors, and regional policies on their official site.
- SOC 2 Type 2
- GDPR & UK GDPR
- CCPA/CPRA
- GovRAMP Progressing Snapshot
- TX‑RAMP Provisional
- HECVAT
- BAAs for HIPAA
- PCI DSS support
- ISO 27001
Details
Category
Price
- B2 Pay‑As‑You‑Go $6.95/TB/mo
- B2 Overdrive $15/TB/mo
- B2 Reserve (20TB+ annual) custom
Free version
Best for
- Active backup and disaster recovery with Veeam/Synology
- Media archives and workflows with CDN delivery
- Cost‑controlled storage for AI/ML datasets
- Multi‑region compliance and redundancy via Cloud Replication.
Frequently asked questions
Backblaze B2
Infrastructure & Hosting
Ready to get started?
Visit the Backblaze B2 website to explore plans and start your free trial.
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