The approximation of edit distance result [1] seems pretty readable to me, but the learn proof is still incomplete [2]. It's certainly much less readable than a good human written proof but it's certainly better than the last generation of AI proofs.

[1] https://github.com/openai/math/blob/main/preprints/An-Almost... [2] https://github.com/openai/math/blob/main/lean/ComparatorChal...