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See how reviewed tools stack up for your needs. Every value comes from a published JAVIS review.
| Feature / criteria |  Pydantic AIAI Agent Frameworks |  OpenAI Agents SDKAI Agent Frameworks |
|---|---|---|
| JAVIS Score | 77 / 100 | 86 / 100 |
| Price | Free (framework); Logfire Personal $0, Team $49/month, Growth $249/month | Free |
| Pricing model | Open source | Open source |
| Free tier | ✓ Yes | ✓ Yes |
| Open source | ✓ Yes | ✓ Yes |
| Our verdict | Free MIT Python agent framework with typed outputs, eight durable-execution engines and built-in evals, now on a v2 line that ships a release every two days; the optional Logfire add-on is free to $249 a month, and GitHub lists 19 patched advisories in 2026. | The SDK didn't get replaced by the Agents API. It got a sibling. |
| Last checked | Oct 28, 2026 | Oct 5, 2026 |
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