Python 3.13.1 Release Notes 2025 Page

For users migrating from earlier versions of Python 3.13, the following changes may be of interest:

The Python 3.13 series represents a transformative moment for the language, shifting focus from purely incremental updates to foundational architectural changes. Python 3.13.1, the first major maintenance release, continues this momentum into 2025 by refining the experimental features that define this generation: a free-threaded mode and a Just-In-Time (JIT) compiler. python 3.13.1 release notes 2025

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. For users migrating from earlier versions of Python 3