Python 3.13.1 Release Notes 2025 __exclusive__ -

Python 3.13.1 is a robust, secure, and stable release. It solidifies the ambitious changes introduced in 3.13.0. While the experimental JIT and free-threading features continue to be opt-in work-in-progress features, the core interpreter is now faster, more user-friendly, and more reliable than ever before.

Following the landmark release of Python 3.13 in October 2024, the Python Software Foundation (PSF) released Python 3.13.1 in December 2024. While the initial 3.13 release introduced groundbreaking features like the experimental JIT compiler and a revamped interactive shell, version 3.13.1 represents the critical stabilization phase. python 3.13.1 release notes 2025