Fern vs Postman
Fern and Postman are both API & developer docs tools. Fern is aimed at developers, while Postman is aimed at developers and small businesses. Both have a free plan.
Fern
SDKs and docs generated from your API spec
Postman
API platform for testing, mocking, documenting and sharing APIs
| Pricing | Freemium | Freemium · $9 |
| Starting price | Not published | $9/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Built for | Developers | Developers, Small businesses, Enterprise |
| Platforms | web | web, macos, windows, linux |
| Country | US · 2022 | US · 2014 |
| Rating | — | — |
Choose Fern if
API-first companies.
- Saves SDK engineering
- Idiomatic code
- Docs included
Look elsewhere if: Small internal APIs.
Choose Postman if
Development teams that want a shared, full-featured workspace for testing, mocking and documenting APIs.
- Industry standard; many API vendors ship ready Postman collections
- Testing, mocking, docs and monitoring in a single tool
- Capable Free plan for solo developers
Look elsewhere if: Developers who want a lightweight Git-native client or just a docs portal (Bruno, Insomnia, ReadMe, Scalar).
Fern vs Postman pricing
Fern
- Free$010 team members, 1,000 pages, custom domain
- EnterpriseCustomSSO, SCIM, RBAC, self-hosting, SLA
Postman
- Free$01 user; collections, mock servers, up to 5 integrations
- Solo$9/moBilled annually; 1 user, 400 AI credits/mo
- Team$19/user/moBilled annually; unlimited users, 400 AI credits/user
- EnterpriseCustomGovernance, 800 pooled AI credits/user, 100 integrations
Fern · Key features
- SDK generation (TS, Python, Java, Go)
- Docs generation
- API definition
- CI publishing
- Versioning
- Examples
Cons
- Enterprise pricing is custom
- Spec quality required
- Vendor dependence
Postman · Key features
- Collections with pre-request scripts, tests and environment variables
- Requests for REST, GraphQL, gRPC, WebSocket and MQTT APIs
- Mock servers that simulate endpoints before the backend exists
- Scheduled monitors for uptime and response checks
- Collection runner and Postman CLI for CI/CD pipelines
- Spec Hub and native Git sync for API definitions
Cons
- Free plan no longer allows team collaboration
- Heavy desktop app and a cloud account needed for most features
- Collections live in a proprietary format, not plain files in your repo
Fern vs Postman: FAQ
Do Fern and Postman have a free plan?
Yes, both Fern and Postman have a free plan; paid plans add more usage and features.
Which is better for small businesses, Fern or Postman?
Postman lists small businesses as a core audience, while Fern is aimed more at developers.