Postman
Free / from ~$14 per user/mo
Insomnia
Free / from ~$12 per user/mo
Postman is the dominant, full-featured API platform with collaboration, testing, and governance. Insomnia is a lightweight, fast, developer-focused API client. Postman wins on breadth and team features; Insomnia wins on speed and simplicity.
Pick Postman if you want a comprehensive API platform with testing, mocks, docs, monitoring, and strong team collaboration.
Pick Insomnia if you want a fast, lightweight, developer-focused API client without the weight of a full platform.
Postman and Insomnia both help developers build and test APIs, but they differ in scope. Postman has grown into a comprehensive API platform: request building, automated testing, mock servers, documentation, monitoring, governance, and deep team collaboration, making it the default for many organizations. Insomnia is deliberately lighter — a fast, clean API client that focuses on the core workflow of designing and sending requests, with a developer-friendly, less bloated feel.
On price, both have free tiers; Postman's paid plans start around $14 per user per month and Insomnia's around $12. The choice is mostly a full API platform with collaboration (Postman) versus a fast, lightweight client (Insomnia).
We compare features, collaboration, speed, pricing, and footprint.
| Quick facts | Postman | Insomnia |
|---|---|---|
| Free plan | Yes | Yes |
| Starting paid price | From ~$14/user/mo | From ~$12/user/mo |
| Feature breadth | Best-in-class | Focused |
| Speed / lightness | Good | Best-in-class |
| Best for | Full API platform + teams | Fast, lightweight client |
Each row reflects the feature on each product's current public release.
| Feature | P Postman | I Insomnia |
|---|---|---|
| Request building & testing | Best-in-class | Strong |
| Automated tests & monitors | Best-in-class | Good |
| Mock servers | Best-in-class | Limited |
| API documentation | Best-in-class | Good |
| Team collaboration & governance | Best-in-class | Good |
| Lightweight & fast | Good | Best-in-class |
| Git-based / open workflows | Good | Best-in-class |
| Free tier | Yes | Yes |
Pricing and features change often. Always verify the current details on each product's official site. Last reviewed June 2026.
Things neither product's marketing page leads with.
Postman is the most complete platform, but its breadth can feel heavy and account-centric for simple use.
Insomnia is faster and simpler, but it lacks Postman's deeper testing, monitoring, and governance features.
For a full team platform Postman wins; for a lightweight client Insomnia wins.
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