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Backblaze B2 vs Bunny Storage

SEPT 2026 audit

A comparison of Backblaze B2 and Bunny Storage built from values read directly from each provider's own documentation, with the source recorded against every figure.

Updated 13 criteria comparedSources last checked

The short answer

Choose 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.

Editorial · Palash Bagchi · approved

Choose Bunny Storage if…

Assets served from a CDN, where paying per replicated region buys latency you would otherwise build yourself — and traffic to Bunny's CDN costs nothing.

Editorial · Palash Bagchi · approved

Consider something else if…

  • 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.
  • Bunny Storage: Replication is the price axis, so multi-region storage costs a multiple of single-region rather than a premium, and it is a CDN origin rather than a general-purpose S3 endpoint.

3 sourced criteria separate them — see where, with sources, below.

No affiliate links, sponsored placements or paid rankings appear on this site. Ordering follows the sourced data and the stated criteria.

01.

At a glance.

CriterionBackblaze B2Bunny Storage
Pricing
Egress over allowanceFree 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.Free to Bunny's own CDN, and no API fees or API egress charges. Bunny prices storage by replication rather than by transfer.
Storage
Storage price$6.95 per TB per month on B2 Overdrive; $15 per TB per month on the unlimited-egress tier$0.01 per GB per month on Standard HDD for up to two regions, then $0.005 per additional region up to nine. Edge SSD is $0.02 per GB per region across up to fifteen. Three regions on Standard is $0.025 per GB.
Operations priceTransactions 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.None. Bunny states no API fees.

Only criteria both providers publish appear here; a tinted cell marks a real difference. Criteria only one of them documents are listed below, and an absence there means we found no source — not that the feature is missing. How we source this.

The small bar above a value is inetGeek's own lean toward that side — computed from the same facts shown, never a number the provider published. See the picker below "The short answer" to weigh only the criteria you care about.

02.

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.
Bunny Storage
Free to Bunny's own CDN, and no API fees or API egress charges. Bunny prices storage by replication rather than by transfer.
Sources (2) →
  • Cloud Storage Pricing — Backblaze ↗

    “Free egress up to 3x storage [...] Free transactions [...] Unlimited free egress [...] B2 includes 750 TB of monthly egress in this scenario.”

    Read 2026-09-06 · official pricing

  • Storage — Bunny.net ↗

    “FREE traffic to Bunny CDN No API fees Free API egress”

    Read 2026-09-06 · official pricing

Storage price

Backblaze B2
$6.95 per TB per month on B2 Overdrive; $15 per TB per month on the unlimited-egress tier
Bunny Storage
$0.01 per GB per month on Standard HDD for up to two regions, then $0.005 per additional region up to nine. Edge SSD is $0.02 per GB per region across up to fifteen. Three regions on Standard is $0.025 per GB.
Sources (2) →
  • Cloud Storage Pricing — Backblaze ↗

    “$6.95 / TB / mo [...] Free egress up to 3x storage [...] $15 / TB / mo [...] Unlimited free egress”

    Read 2026-09-06 · official pricing

  • Storage — Bunny.net ↗

    “Standard tier HDD $0.01/GB per storage region for up to two regions. $0.005/GB per additional region. Up to 9 regions. Single region $0.01/GB Three regions $0.025/GB Two regions $0.02/GB [...] Edge tier SSD $0.02/GB per storage region. Up to 15 regions.”

    Read 2026-09-06 · official 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.
Bunny Storage
None. Bunny states no API fees.
Sources (2) →
  • Cloud Storage Pricing — Backblaze ↗

    “Free transactions [...] This chart features published rates for the U.S. West region. Backblaze competitors' rates can vary by region, amount stored, and other factors.”

    Read 2026-09-06 · official pricing

  • Storage — Bunny.net ↗

    “No API fees Free API egress”

    Read 2026-09-06 · official pricing

When these numbers change, hear about it. Sources are re-checked monthly; a repricing goes out as a short note.

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03.

Documented by only one.

These criteria are published by one provider and not the other. An absence here means we have not found a source, not that the feature is missing.

Free tierBackblaze B2: Yes
Pricing modelBunny Storage: Per region rather than per gigabyte alone: replication is the price axis, so cost scales with how many of Bunny's regions hold a copy. True pay-as-you-go with a $1 monthly minimum and no commitments.
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.
Minimum storage durationBackblaze 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.
S3-compatible APIBackblaze B2: Supported
SOC 2Backblaze 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 27001Backblaze 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.
HIPAABackblaze B2: A Business Associate Agreement is available on request for business customers who are Covered Entities under HIPAA.
GDPR / data residencyBackblaze B2: Adheres to GDPR and UK GDPR privacy policies; Data Processing Agreement addendums are available for EEA/EU and UK residents.
PCI DSSBackblaze 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.
04.

Questions this comparison answers.

Egress over allowance: Backblaze B2 or Bunny Storage?

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.

Bunny Storage: Free to Bunny's own CDN, and no API fees or API egress charges. Bunny prices storage by replication rather than by transfer.

Should I choose Backblaze B2 or Bunny Storage?

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 Bunny Storage if Assets served from a CDN, where paying per replicated region buys latency you would otherwise build yourself — and traffic to Bunny's CDN costs nothing.

Provider pages

Related comparisons

Every page here is sourced and dated.