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Anyone know how this compares to 'ty': a new typechecker from Astral (uv/ruff team), also written in Rust and super fast. I had been waiting on it to reach beta, but would love to move to something faster than pyright sooner if possible.


Pyrefly vs. ty: Comparing Python’s Two New Rust-Based Type Checkers (2025-05-27) https://blog.edward-li.com/tech/comparing-pyrefly-vs-ty/

HN discussion of above: https://news.ycombinator.com/item?id=44107655

How Well Do New Python Type Checkers Conform? A Deep Dive into Ty, Pyrefly, and Zuban (2025-08-29) https://sinon.github.io/future-python-type-checkers/


amazing reply. Thanks!


A note - the second link talks mostly about conformance with a standard suite of tests, only briefly touching on real-world use.

I would very much like to understand how good Zuban is today compared to the competition.




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