Egress is free up to 3x your stored data, then $0.01 per GB. Backblaze B2 is S3-compatible object storage billed by the byte-hour at $6.95 per TB for 30 days. The pricing page says the first 10GB of storage is always free, there are no minimum file size or storage duration fees, and egress is free up to 3x your average monthly stored data, then $0.01 per GB. Class A, B and C API calls are free for pay-as-you-go customers, and Class D calls cost $0.004 per 10,000 with the first 2,500 a day free. You can also commit for one to five years and lock the rate. G2 reviewers value the price, simple pricing and backup use. A Hacker News commenter running it in production in March 2024 listed a weekly maintenance window, slow support and a 0-byte upload that returned success.
Free tier quotas
Free storage
First 10GB is always free, per the pricing page
Egress
Free up to 3x average monthly stored data, then $0.01 per GB
API calls
Class A, B and C free for pay-as-you-go customers. Class D is $0.004 per 10,000, with the first 2,500 a day free
Minimums
No minimum file size and no minimum storage duration fees
Card
A Backblaze blog post (undated in the excerpt) says you do not need a card to create an account
After the free 10GB
$6.95 per TB per 30 days, billed monthly by byte-hour
Last sniffed Oct 19, 2026. Always confirm on the official pricing page.
👍 Good boy
+The first 10GB of storage is always free, and the pricing page lists no minimum file size or storage duration fees.
+Storage is $6.95 per TB for 30 days, and egress is free up to 3x your average monthly stored data, then $0.01 per GB.
+Class A, B and C API calls are free for pay-as-you-go customers. A 2021 Hacker News commenter said request costs could push B2 over 1.5 cents per GB a month, so the current page reads better than that old complaint.
+G2 reviewers value affordability, simple pricing and backup use, and 12 mentions praise ease of use.
+It has an S3-compatible API. A Reddit post says you can mix B2 and S3 calls, and a Hacker News commenter noted that B2 having an S3-compatible API makes things easy.
+You can commit for one to five years to lock your rate, and the page offers assisted data migration and volume discounts.
+A Hacker News commenter in 2021 called B2 really good for backups.
👎 Watch out
−A Hacker News commenter running B2 in production (March 11, 2024) listed a weekly 2-hour maintenance window, 11:30 to 13:30 PST, that usually has no downtime but sometimes is a full outage in the middle of the US day.
−The same commenter reported false success on uploads: B2 said it saved the file, but it was 0 bytes on their system. Their advice was to always verify the upload.
−That commenter also said support asked many questions without seeming to look at error logs, that they filed a ticket about once a year when error rates rose, and that B2 shut down for 10 hours over the Log4j2 CVE.
−Egress past 3x your stored data costs $0.01 per GB, so a read-heavy app that serves files directly can pay more than the headline price.
−A 2021 commenter said other providers such as Scaleway have a similar price if not cheaper, and described B2 as best for backups.
−Term commitments bill the full term at contract start, per the pricing page.
−The production reports come from Hacker News comments, not reviews on G2 or Capterra. They are dated 2021 and 2024, so check Backblaze's current status page.
The catch
The free allowance is 10GB of storage, which suits a prototype or a small backup set and nothing large. After that you pay $6.95 per TB for 30 days.
Egress is free only up to 3x the average amount you store each month, then $0.01 per GB. If you store 1 TB and serve 10 TB a month, you pay for the 7 TB above the free amount.
The best production detail comes from one Hacker News comment in March 2024: a weekly maintenance window, support that asked many questions, a 10-hour shutdown during the Log4j2 CVE, and uploads that returned success while the stored file was 0 bytes. That is one person's report, and it is two years old, so treat it as a checklist for testing: verify uploads and read the status page.
Pricing has moved over time. Backblaze's B2 1.0 launch post listed $0.005 per GB per month, and the current page lists $6.95 per TB.
What’s included
✓S3-compatible API
✓Byte-hour billing
✓Free API calls for pay-as-you-go
✓Egress free up to 3x stored data
✓No minimum file size or duration fees
✓Term commitments with locked rate
✓Assisted data migration
✓Volume discounts
Free tier value
Generosity
B
Estimated value
10GB of free S3-compatible storage
Feature parity
One price: $6.95 per TB per 30 days, billed by the byte-hour.
Screenshots
Backblaze B2 homepageBackblaze B2 pricing page
Paid plans
Pay-as-you-go, $6.95 per TB per 30 days
Billed monthly on byte-hours of stored data. Egress free up to 3x average monthly stored data, then $0.01 per GB. Pay by credit card or invoice.
Term commitment, 1 to 5 years
Commit to a set amount of storage. You are billed for the full term at contract start and the rate is locked for the term.
Volume discounts
The pricing page says discounts are available with volume and term commitments.
Common questions
Does Backblaze B2 have a free tier?
Yes. The pricing page says the first 10GB of storage is always free.
How much does B2 cost after that?
$6.95 per TB per 30 days, billed monthly by byte-hour.
Are there egress fees?
Egress is free up to 3x your average monthly stored data, then $0.01 per GB.
Do API calls cost extra?
Class A, B and C calls are free for pay-as-you-go customers. Class D is $0.004 per 10,000 calls, and the first 2,500 a day are free.
Is B2 S3 compatible?
Yes. Backblaze describes it as S3-compatible object storage.
Is there a minimum storage duration?
No. The page lists no minimum file size or storage duration fees.
Change history
Checked October 22, 2026
Rewrote from the current pricing page and Backblaze blog posts ($6.95 per TB, 10GB free, free egress up to 3x), G2 themes, and Hacker News and Reddit reports.
