Python 3.13.1 Release December 2025 News !link! Page

The multiprocessing resource tracker has been improved to use its original communication protocol, fixing bugs that occurred during upgrades. B. Free-Threading (No-GIL) Maturity

The PSF’s own performance team ran standard benchmarks on a 2025-era AMD Zen 6 workstation and an M4 MacBook Pro. Results (geometric mean): python 3.13.1 release december 2025 news

Download from python.org/downloads/release/python-3131/ – installers for Windows, macOS, and source tarball. The multiprocessing resource tracker has been improved to

“The no-GIL build made our image processing pipeline 3.8x faster with zero code changes beyond the interpreter flag. Unreal.” – python 3.13.1 release december 2025 news

Before diving into the December patch release, let’s recall why 3.13.0 was such a talked-about upgrade: