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

Oct 3, 2025 · 2:45 PM UTC

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V2 is faster if i remember right?
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Now only know there is v1 and v2 version. I use to just pip install and start using it. Have to go and check. Will upgrade if required. Thanks.
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We have a couple hundred micro services, some of them still on V1. No particularl reason other than to avoid breaking changes with pydantic-settings
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So glad you are an opensource guy and not a big tech company, else you would just cut off V1 forcing all users to use V2 and make it a paid service. But please, this is not a blueprint, ok?
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2, but startup time is still measured in minutes for large project 😅
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Confieso que en algún proyecto legado el v1 sigue vivo, pero todo lo nuevo va en v2. Es hora de avanzar, ¡el futuro es una actualización constante! 🚀
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