head to head · open source
fastapi vs typia
fastapi has 104,566 GitHub stars, 10,179 forks, 78 open issues and last shipped yesterday. typia has 5,961 stars, 233 forks, 4 open issues and last shipped yesterday. fastapi leads on adoption by 1,654% (104,566 vs 5,961 stars). fastapi is written in Python under MIT; typia is written in TypeScript under MIT. fastapi has attracted 10% as many forks as stars, typia 4%. fastapi was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (json, json-schema, openapi), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| fastapi | typia | |
|---|---|---|
| GitHub stars | ★ 105K | ★ 6.0K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 10K | ⑂ 233 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick fastapi if
- You weight community size — 105K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick typia if
- You want the typia feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and typia fits your workflow better
About fastapi
FastAPI framework, high performance, easy to learn, fast to code, ready for production Documentation : Source Code : FastAPI is a modern, fast (high performance), web framework for building APIs with Python based on standard Python type hints. The key features are: Fast : Very high performance, on par with NodeJS and Go (thanks to Starlette and Pydantic). One of the fastest Python frameworks available. Fast to code : Increase the speed to develop features by about 200% to 300%. Fewer bugs : Reduce about 40% of human (developer) induced errors. Intuitive : Great editor support. Completion everywhere. Less time…
read the full fastapi overview →
About typia
Typia typia is a transformer library supporting below features: Super fast Runtime Validators Enhanced JSON schema and serde functions LLM function calling harness Protocol Buffer encoder and decoder Random data generator [!NOTE] Only one line required, with pure TypeScript type Runtime validator is 20,000x faster than class validator JSON serialization is 200x faster than class transformer LLM function calling harness turns 6.75% → 100% accuracy Write the type on the left, and typia compiles it into the validator on the right — at build time, with no schema and no runtime reflection. Setup Install typia with…
read the full typia overview →
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Frequently asked questions
Is fastapi or typia more popular?
fastapi has 104,566 GitHub stars and typia has 5,961. fastapi has the larger community by that measure.
Are fastapi and typia free?
Both are open source. fastapi is licensed under MIT and typia under MIT. Neither carries a licence fee.
What is the difference between fastapi and typia?
fastapi is written in Python and typia in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, fastapi or typia?
Choose fastapi if you want the larger community (104,566 stars) or its MIT licence terms. Choose typia if its feature set, stack or MIT licence fits better. Both are self-hostable.