Python 3.13 News Today November 2025 · Ultimate & Hot

| Python Version | % of production downloads | |----------------|---------------------------| | 3.11 | 42% | | 3.12 | 35% | | | 18% | | 3.10 or older | 5% |

It works. The nogil fork is officially dead. For CPU-bound threaded workloads (think web scraping, data processing, or pandas aggregations), teams are reporting 2x to 4x speedups without rewriting a single line of multiprocessing code. python 3.13 news today november 2025

So only 1 in 5 production environments is on 3.13. Why? The free-threaded build requires recompiling C extensions, and many CI/CD pipelines haven't updated their base Docker images. | Python Version | % of production downloads

Use free-threading for new backend services. Wait for legacy data science environments. 2. The JIT Compiler: Warm-up is Over Python 3.13 introduced a copy-and-patch JIT (courtesy of brandtbucher). Back in October 2024, it gave a ~5-10% speed boost. One year later, with JIT optimizations tuned in 3.13.2 and 3.13.4? So only 1 in 5 production environments is on 3