I'm teaching Python for sciences and try to understand what happens with the different projects to improve Python performance.

I tried to follow faster-cpython but I have to admit that I feel a bit lost with the current state.

I read https://docs.python.org/3.13/whatsnew/3.13.html#an-experimental-just-in-time-jit-compiler, which seems quite clear.

However, I also see that 3.13, even with Tier 2 and JIT enabled (and free-threaded mode disabled), is only marginally faster than 3.12 (https://github.com/faster-cpython/benchmarking-public), and clearly still much slower than PyPy.

I think it would be useful to have few communications (at different technical levels) to explain where is the project and what are the next steps for 3.14 and 3.15. Also about the consequences of the GIL removal for faster-cpython.