: An experimental Just-In-Time (JIT) compiler was introduced to provide a foundation for massive performance improvements in subsequent versions.
Python 3.13 introduced the ability to disable the Global Interpreter Lock (GIL). python 3.13.1 released oct 2025
In 3.13.1, you install or run Python with the t suffix (on supported platforms): : An experimental Just-In-Time (JIT) compiler was introduced
The series reached a significant milestone in October 2025, continuing the evolution of the language toward better performance and developer experience . While Python 3.13.1 was originally released in December 2024 , the 3.13 branch remained in active maintenance throughout 2025, with major bugfix releases like Python 3.13.8 and 3.13.9 specifically dropping in October 2025 . The October 2025 Context python 3.13.1 released oct 2025