Python 3.14 lands with a ~27% speed jump over 3.13, keeping the post-3.11 momentum alive. The big news: the new free-threading interpreter—no GIL—now hits up to 3.1x faster than regular CPython in multi-threaded, CPU-heavy benchmarks. That’s up from 2.2x in 3.13.
Less shiny: the JIT interpreter still can’t keep up. Gains are real, but choppy.
