A new JIT compiler, the first no-GIL edition of Python, better errors and typing enhancement, and the removal of dead batteries are all part of Python 3.13.

The new interpreter will run Python programs as much as 5% faster, with no changes to existing code required. A beta of Python 3.14 is due in May.

Python 3.11 will bear the fruits of CPython's multi-year effort to make Python a faster programming language. X. Trending. Apple's iOS 26 ... adaptive interpreter that specializes code ...