Python 3.13 Release News December 2025 ((full)) Page

Python 3.13 did not arrive with thunder. It arrived like frost: incremental, transformative in its chill, covering every corner of the runtime.

introduces a copy-and-patch JIT compiler, building on the micro-op stack in 3.11. By December 2025, the JIT is on by default in official binaries. python 3.13 release news december 2025

: Added a copy-and-patch JIT compiler to improve execution speed for many workloads. Python 3