head to head · open source
fastapi vs kiro-gateway
fastapi has 102,402 GitHub stars, 9,903 forks, 78 open issues and last shipped 4 days ago. kiro-gateway has 2,281 stars, 552 forks, 103 open issues and last shipped 4 months ago. fastapi leads on adoption by 4,389% (102,402 vs 2,281 stars). fastapi is written in Python under MIT; kiro-gateway is written in Python under AGPL-3.0. fastapi has attracted 10% as many forks as stars, kiro-gateway 24%. fastapi was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (fastapi), 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 | kiro-gateway | |
|---|---|---|
| GitHub stars | ★ 102K | ★ 2.3K |
| License | MIT | AGPL-3.0 |
| Written in | Python | Python |
| Last push | 2026-09-14 | 2026-05-18 |
| Forks | ⑂ 9.9K | ⑂ 552 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick fastapi if
- You weight community size — 102K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick kiro-gateway if
- You want the kiro-gateway feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Python
- You evaluated both and kiro-gateway fits your workflow better
About fastapi
FastAPI is an MIT licensed, high performance Python web framework for building APIs with standard Python type hints, aimed at Python developers and teams that need production ready HTTP services with automatic OpenAPI documentation.
read the full fastapi overview →
About kiro-gateway
Kiro Gateway is an open source proxy API gateway that turns the Claude and other models available inside Kiro IDE and Kiro CLI (Amazon Q Developer / AWS CodeWhisperer) into OpenAI and Anthropic compatible API endpoints, for developers who want to reach those models from any client.
read the full kiro-gateway overview →
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Frequently asked questions
Is fastapi or kiro-gateway more popular?
fastapi has 102,402 GitHub stars and kiro-gateway has 2,281. fastapi has the larger community by that measure.
Are fastapi and kiro-gateway free?
Both are open source. fastapi is licensed under MIT and kiro-gateway under AGPL-3.0. Neither carries a licence fee.
What is the difference between fastapi and kiro-gateway?
fastapi is written in Python and kiro-gateway in Python. 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 kiro-gateway?
Choose fastapi if you want the larger community (102,402 stars) or its MIT licence terms. Choose kiro-gateway if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.