Side by side
FastAPI Code Generator vs Stainless
Both stand on api generation software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan
Visit FastAPI Code Generator 
Free plan LinuxMacWeb
Stainless brings SDK generation, API documentation, and code-mode MCP servers together around OpenAPI. Check the Free plan limits and automatic trial enrollment, and note the on-premise hosting restriction.
Visit StainlessThe facts
| FastAPI Code Generator | Stainless | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Not published | Linux, Mac, Web |
| Lowest paid plan | Not published | Free or on request |
| Plans published | None | 1 |
| Maker | Not published | Not published |
| Website | github.com | stainless.com |
| On api generation software | #17 of 25 | #13 of 25 |
FastAPI Code Generator: what it does well
Stainless: what it does well
- Generates SDKs from OpenAPI specifications.
- SDKs include types, pagination, and retries.
- Documentation stays in sync with the API.
- Free plan includes email support.
What to know first
- Free plan is limited to five generators and five seats.
- Requires a GitHub account.
- Code generation cannot be hosted on-premise.
- Exceeding Free Plan terms triggers a 30-day paid-plan trial.
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