In your @FastAPI apps, are you using @pydantic version 1 or 2? If v1, why haven't you upgraded to v2? 🤔 I wanna make sure everyone upgraded or can upgrade so that I can remove support for v1.
76% Pydantic v2
6% Pydantic v1
18% Pydantic 🍿
877 votes • Final results
76% Pydantic v2
6% Pydantic v1
18% Pydantic 🍿
877 votes • Final results
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Replying to @tiangolo @FastAPI @pydantic
2, but startup time is still measured in minutes for large project 😅

Oct 3, 2025 · 7:05 PM UTC

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Replying to @olgeni @tiangolo @FastAPI @pydantic
then I suspect you're doing something wrong. If you have an example that takes anything like that long, I'd love to see it.
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