Python 3.13.1 News -

It is not enabled by default. Developers must explicitly use the free-threaded build (e.g., via --disable-gil during compilation). 3. Experimental Just-In-Time (JIT) Compiler Python 3.13 introduces a preliminary Copy-and-Patch JIT .

Improved "Smart Pasting" preserves indentation, and history mode makes it easier to copy previous commands. 2. Experimental Free-Threaded Mode (No-GIL) python 3.13.1 news

Commands like exit and clear work directly without needing parentheses (e.g., exit() is no longer strictly required). It is not enabled by default

The JIT is still opt-in and primarily benefits CPU-bound loops. python 3.13.1 news