Backblaze B2 vs Duplicati (2026): which should you pick?
As of Nov 13, 2026, Duplicati grades higher than Backblaze B2: 2.8 against 2.0 out of 4.0.
Checked Nov 12, 2026 and Nov 13, 2026 · graded Nov 12, 2026 and Nov 13, 2026 by ToolGPA
Duplicati grades higher on value for money, the free plan and ease of use. They get the same grade on features and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Backblaze B2
S3-compatible object storage billed per terabyte
Duplicati
Encrypted backup to storage you choose, with a free open-source client
Which one is for you
Pick Backblaze B2 if
- Fits if you have developers or an IT person to point backup tools at an S3 bucket
- Works for teams storing terabytes of backups that rarely get read back
Look elsewhere if
- Skip it if you want a folder that syncs to your laptop, as there is no consumer sync app
- Tight if you read a lot back: egress beyond 3 times your stored data costs $0.01 per GB
- Watch out: API calls past the first 2,500 a day cost $0.004 per 10,000 on Class D transactions
- Watch out: B2 Overdrive is $15 per TB and up, with a multi-petabyte commitment bought by quote
Pick Duplicati if
- Fits if you want a free backup client and your own pick of storage
- Works for IT teams watching backups on many machines in one console
Look elsewhere if
- Tight if you run more than 2 machines, because the free console stops at 2
- Not for you if you want alerts for missed backups or remote management, as those need Pro
- Skip it if you want storage included, since self-managed use brings your own
- Watch out: Microsoft 365 and Google Workspace backup is $0.50 self-hosted or $1.50 managed per user a month, and Enterprise starts at 10 machines
How we grade them
| 2.0GPABackblaze B2Fair | 2.8GPADuplicatiGood | |
|---|---|---|
| Value for money | C$6.95 per TB a month matches the category's middle price. This is a different kind of product from consumer storage, billed by the terabyte. | AThe client is free to download and run, and Pro monitoring is $2 per machine a month billed yearly, under the category's $2.85 line. Storage costs are yours. |
| Free plan and trial | CThe first 10 GB is always free, with free egress up to 3 times what you store, and you'll pass 10 GB quickly. | BThe client and a console plan for 2 machines and the last 200 backups are free. One person could live on that, though alerts need Pro. |
| Features | CStorage through an S3-compatible API with lifecycle and partner integrations, but the page shows no consumer sync app. It does its narrow job fully. | CBackup with encryption, changed-block uploads and a central console does the job, which is narrower than storage. M365 and Google backup is priced on its own and the console features are gated. |
| Ease of use | DIt needs an API, keys and tooling, so it's a developer service. No store rating on record. | CYou set up each backup job and destination, with no store rating on record. |
| Platforms and integrations | BThe vendor lists 8 integrations and an S3 API, but it is web only, with no apps. | BWeb interface plus Mac, Windows and Linux, and many destinations such as S3, Azure, Dropbox, OneDrive and Backblaze B2. No phone apps. |
| Best for | cheap object storage for developers and IT teams | free backup to your own storage |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Backblaze B2 and Duplicati. How we grade
Price against what you get
Backblaze B2 starts at $6.95 a month and scores 2.0 out of 4 on features, ease of use and platforms. Duplicati starts at $2 a month and scores 2.3.
Duplicati scores higher and starts $4.95 a month lower. Of the other file storage and sync services on the chart, 31 score higher than Backblaze B2 for less, and 8 score higher than Duplicati for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- Duplicati is open source and end-to-end encrypted, according to its own site.
- Backblaze B2 also covers file management.
- Duplicati also covers reports.
At a glance
| Backblaze B2 | Duplicati | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | $6.95 per TB / month | $2 per machine / month, billed annually ($2.50 billed monthly) |
| Free plan | The first 10 GB of storage is always free, with free egress up to 3x the data stored. | Console Free plan: insights dashboard, monitoring for up to 2 machines and the last 200 backups. |
| Free trial | None listed | None listed |
| Web | ||
| macOS | ||
| Windows | ||
| Linux | ||
| Made by | Backblaze | Duplicati Inc |
| Price read from | backblaze.com | duplicati.com |
| Checked | Nov 12, 2026 | Nov 13, 2026 |
Worth knowing
Backblaze B2
- Egress beyond 3x the average monthly data stored costs $0.01 per GB, except to partner CDNs and compute services.
- Class D API transactions cost $0.004 per 10,000 calls after the first 2,500 each day.
- B2 Overdrive needs a multi-petabyte commitment and is sold by quote.
- It is a storage service for developers and IT teams; the page shows no consumer sync app.
Duplicati
- The free console monitors only 2 machines; alerts and remote management need Pro.
- Enterprise starts at 10 machines on a yearly contract and is sold through sales.
- Storage is not included on the self-managed route; extra integrated storage is $0.60 per additional 100 GB per month, billed yearly.
- Microsoft 365 and Google Workspace backup is priced separately: $0.50 per user / month self-hosted, $1.50 managed, both billed yearly.
Key features
Backblaze B2
- S3-compatible object storage
- The page describes S3-compatible storage for active archiving, backup and recovery, media and application workloads.
- No minimums on files or duration
- There are no minimum file size or storage duration fees, and class A, B and C API calls are free on pay as you go.
- Free egress allowances
- Egress is free up to 3x the average data stored, and free to partner CDNs and compute services such as Cloudflare, Fastly and bunny.net.
- Capacity commitments
- Customers can commit to a set amount of storage for 1 to 5 years, billed for the full term at contract start with a locked rate.
Duplicati
- Bring your own storage
- Back up to S3, Azure Blob Storage, Google Cloud, Backblaze B2, Dropbox, OneDrive, Box, SFTP, WebDAV or local disks.
- Encryption before upload
- Data is encrypted on the device before it leaves, and the vendor says only the customer holds the keys.
- Changed-block uploads
- Only changed blocks are sent, which cuts bandwidth use, and retention rules decide how long old versions are kept.
- Central console
- A web console shows backup status across machines; paid plans add missed-backup alerts and remote management.
- Microsoft 365 and Google Workspace backup
- Mailboxes, OneDrive, SharePoint, Teams, Gmail and Drive can be backed up, self-hosted or as a managed service.
Plans
Backblaze B2
Backblaze B2$6.95
per TB / month, billed monthly on byte-hours stored
Pay as you go, or commit to capacity for 1 to 5 years with discounts. Free egress up to 3x stored data, then $0.01/GB.
B2 Overdrive$15
per TB / month and up
For AI, HPC and research workloads: dedicated vaults, unlimited free egress and a multi-petabyte commitment. Sold by quote.
Duplicati
Free$0
Insights dashboard, monitoring for up to 2 machines and the last 200 backups.
Pro$2
per machine / month, billed annually ($2.50 billed monthly)
Up to 100 machines. Adds missed-backup alerts, AI backup analysis, remote management and 100 GB of storage per machine.
Enterprise$3
per machine / month, from, 10 machines minimum
For MSPs and large companies; yearly contract sold through sales. Adds organization management, SSO with MFA and agent-based deployment.
Ways to pay less
Backblaze B2
- Other savings
Discounts for volume and term commitments
The pricing page says discounts are available when you commit to volume and a 1 to 5 year term; the amounts are not published.
Duplicati
- Annual discount
Pro costs less when billed annually
The pricing page shows Pro at $2 per machine per month with annual billing selected, against $2.50 as the other displayed figure.
Common questions
Which is cheaper, Backblaze B2 or Duplicati?
As of Nov 13, 2026, Duplicati is cheaper to start with: $2 a month, against $6.95 a month for Backblaze B2. Backblaze B2 starts at $6.95 per TB / month, and Duplicati starts at $2 per machine / month, billed annually ($2.50 billed monthly).
Which has a free plan, Backblaze B2 or Duplicati?
As of Nov 13, 2026, both Backblaze B2 and Duplicati have a free plan.
Which platforms do Backblaze B2 and Duplicati run on?
As of Nov 13, 2026, only Duplicati lists macOS, Windows and Linux apps. Both list a web app. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.