By disabling the GIL, multiple threads can execute Python bytecode concurrently, significantly benefiting multi-threaded workloads.

7 Jan 2026 — Python 3.13 was released on October 7, 2024. For full details, see the changelog. Python documentation Python Release Python 3.13.13

Early benchmarks show average speedups of around 5%, though some workloads may see higher gains.

If you are already on Python 3.13.0, upgrading is strongly recommended. If you are on an older Python version, use this release as a stable foundation to evaluate the 3.13 series. The Python core team continues to refine performance and experimental features, with the next feature release scheduled for Python 3.14.0 alpha 1.