The headline feature of the 3.13 series was the "Free-threaded" build, which allows Python to run without the Global Interpreter Lock (GIL). In November 2025, we are seeing the fruits of this transition:
Python 3.13.1 introduced a copy-and-patch Just-In-Time (JIT) compiler. By late 2025, the community has fine-tuned how to use it: python 3.13.1 news november 2025
So there is .