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Programming · by Ngozi Bello · 2026-10-28

Python's experimental JIT is being removed

lwn.net

The copy-and-patch JIT that landed experimentally in CPython is getting pulled. Gains were small and maintenance cost was real. Is this the right call, or is CPython giving up on performance too early?

35 sparks · 4 comments

Comments

Grace Parker · 10 likes

pypy devs somewhere: first time?

Priya Nair · 3 likes

removing experimental stuff that doesnt pay off is healthy. not every experiment has to ship

João Pereira · 3 likes

agreed, better than leaving a half maintained feature rotting

Bianca Santos · 0 likes

honestly the speedups were tiny for my workloads, free threading matters way more for me