# Backblaze B2 vs Storj

Canonical: https://inetgeek.com/compare/backblaze-b2-vs-storj/

Every value below is read from Backblaze B2's and Storj's own documentation. See https://inetgeek.com/methodology/ for how.

## At a glance

| Criterion | Backblaze B2 | Storj |
| --- | --- | --- |
| Egress over allowance | Free up to three times your stored capacity each month on the $6.95/TB tier; unlimited free egress on the $15/TB tier. Egress beyond the 3x allowance is chargeable. | $7 per TB, the same rate as storage — reduced from $20 per TB on the Standard tier. Storj charges for egress where R2, Wasabi and Tigris do not, but at a tenth of what S3 charges. |
| Storage price | $6.95 per TB per month on B2 Overdrive; $15 per TB per month on the unlimited-egress tier | $7 per TB per month, which is $0.007 per GB. A $5 monthly minimum applies to Standard and Advanced accounts. |
| Operations price | Transactions are not charged on the $6.95/TB tier. Backblaze notes that its published chart uses U.S. West rates and that competitor rates vary by region and volume. | Segment fees have been eliminated across all new tiers. They still apply to accounts on legacy plans. |
| S3-compatible API | Supported | Supported |

## Where they differ

### Egress over allowance

- Backblaze B2: Free up to three times your stored capacity each month on the $6.95/TB tier; unlimited free egress on the $15/TB tier. Egress beyond the 3x allowance is chargeable. ([source](https://www.backblaze.com/cloud-storage/pricing))
- Storj: $7 per TB, the same rate as storage — reduced from $20 per TB on the Standard tier. Storj charges for egress where R2, Wasabi and Tigris do not, but at a tenth of what S3 charges. ([source](https://www.storj.io/pricing))

### Storage price

- Backblaze B2: $6.95 per TB per month on B2 Overdrive; $15 per TB per month on the unlimited-egress tier ([source](https://www.backblaze.com/cloud-storage/pricing))
- Storj: $7 per TB per month, which is $0.007 per GB. A $5 monthly minimum applies to Standard and Advanced accounts. ([source](https://www.storj.io/pricing))

### Operations price

- Backblaze B2: Transactions are not charged on the $6.95/TB tier. Backblaze notes that its published chart uses U.S. West rates and that competitor rates vary by region and volume. ([source](https://www.backblaze.com/cloud-storage/pricing))
- Storj: Segment fees have been eliminated across all new tiers. They still apply to accounts on legacy plans. ([source](https://www.storj.io/pricing))

## Which should you choose?

Pick Backblaze B2 if Bulk capacity where egress is predictable — free up to three times what you store each month, which covers most backup and archive patterns comfortably at $6.95 per terabyte.

Pick Storj if Workloads that want data spread across many independent locations rather than one provider's region, at a storage rate close to the cheapest here.

Consider something else: Backblaze B2 — Egress is only free to that 3x ceiling. A bucket read far more often than its size, like a public media library, is the shape this pricing is not built for.

Consider something else: Storj — Egress is charged at the same $7 per TB as storage, so a read-heavy workload costs roughly double what the storage line suggests — the three free-egress providers here charge nothing for it.

## Documented by only one

- Free tier: Backblaze B2: Yes
- Storage (entry plan): Backblaze B2: 10 GB free, permanently — 'First 10GB storage is always free.' The statement is a row-level note on Backblaze's pricing-model table, so it applies to B2 storage rather than to one plan, and it is an ongoing allowance rather than the 'Start Free' trial the page advertises separately.
- Regions: Storj: Distributed across tens of thousands of storage locations globally rather than named regions; a US-only option runs on SOC 2 type 2 compliant data centres.
- Minimum storage duration: Backblaze B2: None. Backblaze states no minimum file size or storage duration fee on B2 Cloud Storage, so an object deleted an hour after upload is billed only for that hour.
- SOC 2: Backblaze B2: SOC 2 Type 2 compliant, audited by an independent third-party firm; the data centers Backblaze operates in are also SOC 2 compliant.
- ISO 27001: Backblaze B2: Not a Backblaze organizational certification — Backblaze states it primarily operates in data centers that hold ISO 27001 certificates, a facility-level attestation rather than one covering Backblaze itself.
- HIPAA: Backblaze B2: A Business Associate Agreement is available on request for business customers who are Covered Entities under HIPAA.
- GDPR / data residency: Backblaze B2: Adheres to GDPR and UK GDPR privacy policies; Data Processing Agreement addendums are available for EEA/EU and UK residents.
- PCI DSS: Backblaze B2: Card processing is handled through Stripe, which combined with Backblaze's internal security controls contributes to PCI-DSS adherence — not a direct PCI-DSS certification of Backblaze's own storage platform.

## Questions this comparison answers

**Egress over allowance: Backblaze B2 or Storj?**

Backblaze B2: Free up to three times your stored capacity each month on the $6.95/TB tier; unlimited free egress on the $15/TB tier. Egress beyond the 3x allowance is chargeable.
Storj: $7 per TB, the same rate as storage — reduced from $20 per TB on the Standard tier. Storj charges for egress where R2, Wasabi and Tigris do not, but at a tenth of what S3 charges.

**Should I choose Backblaze B2 or Storj?**

Pick Backblaze B2 if Bulk capacity where egress is predictable — free up to three times what you store each month, which covers most backup and archive patterns comfortably at $6.95 per terabyte.
Pick Storj if Workloads that want data spread across many independent locations rather than one provider's region, at a storage rate close to the cheapest here.