As 2025 draws to a close, the Python ecosystem has firmly settled into the Python 3.13 era. Released in October 2024, Python 3.13 was heralded as one of the most significant updates in the language's history due to the introduction of the experimental Just-In-Time (JIT) compiler and the ability to run without the Global Interpreter Lock (GIL).
One year after its initial launch, the "experimental" tags on 3.13's biggest changes are being tested at scale in the wild. python 3.13 news december 2025