What was reported:
Issue evidentlyai/evidently#862 (closed, 11 comments): I was trying to install evidently with the latest versions of pydantic (v2) and pyarrow. I found we are still using version 11dev of pyarrow and currently pyarrow is on version 14. I think we can bump up both the dependencies and see massive perfomance gains.

What works:
Pydantic 2 support shipped in Evidently 0.4.16. Upgrade to 0.4.16 or newer and the import/type errors from mixing Evidently with Pydantic 2 go away. There is no need to pin Pydantic back to 1.x once you are on the fixed Evidently.