**Local-first: your data stays with you: **Insomnia stores everything on your machine by default. No forced cloud sync, no account needed just to send a request. This is helpful if privacy or working in a regulated environment is a priority for you
**Free for teams + Git-based sync: **Postman’s free plan is now mostly for solo use, with team features behind a paywall. Insomnia, on the other hand, offers free unlimited cloud collaboration, so teams can work together without restrictions. It also supports small teams collaborating for [free using Git sync](https://insomnia.rest/pricing)free using Git sync. You can connect your own Git repos (GitHub, GitLab, etc.) and manage your API work just like code, with branches, pull requests, and full version control.
**Built for modern workflows (AI-ready): **[Insomnia 12](https://konghq.com/company/press-room/press-release/kong-releases-insomnia-12-to-accelerate-api-and-mcp-development-with-ai-powered-testing-and-collaboration)Insomnia 12 comes with built-in support for testing AI workflows (like MCP) and can even generate mock APIs using simple text prompts. It works with both cloud and local AI models.
**Flexible with plugins: **You can extend Insomnia using [_plugins _](https://insomnia.rest/plugins.)_plugins _to match your workflow, instead of being limited to built-in features.
**Lightweight and faster: **Insomnia generally uses less memory and feels faster. If you’re running other dev tools, this can make a noticeable difference
**More cost-effective: **Insomnia offers a free and open-source version, along with paid plans, often making it more affordable than Postman. For example, need external vault integration to retrieve secret values automatically when sending requests? This is available out-of-the-box with Insomnia Enterprise, whereas Postman charges an additional $29/user/month.