Python 3.13.1 Release Notes November 2025 Jun 2026

A basic Just-In-Time (JIT) compiler was added to provide modest performance improvements, laying the groundwork for more substantial speed gains in future versions.

The official release schedule (PEP 719) tracks the ongoing maintenance of this branch. By November 2025, Python 3.13 is in its peak "bugfix" phase. Python documentation python 3.13.1 release notes november 2025

Python 3.13.1 Release Notes: November 2025 Update As of , the Python 3.13 series has matured into a stable, high-performance branch of the language . While the original Python 3.13.1 was first released on December 3, 2024 , it remains a critical milestone for developers looking for a stable entry point into the 3.13 ecosystem. A basic Just-In-Time (JIT) compiler was added to