HOW FAST IS PYTHON 3.15?

Summary from the TLDR DevOps newsletter

Informal CPU-bound benchmarks of Python 3.15.0rc3 show standard-interpreter performance largely unchanged from 3.14, while the experimental JIT runs roughly 20–28% faster than the standard 3.15 interpreter. Free-threaded builds deliver substantial gains in four-thread tests, but these results cover only Fibonacci and bubble-sort workloads rather than general application performance.