Is Python 3.14 Free-Threaded by Default? GIL Explained
PEP 779 promoted the no-GIL build from experimental to officially supported in 3.14. It is still opt-in, and making it the default is a later phase.
11 Oct 20263 min read
PEP 779 promoted the no-GIL build from experimental to officially supported in 3.14. It is still opt-in, and making it the default is a later phase.
Hands-on ThreadPoolExecutor vs sequential lab: real wall-time speedup for I/O sleep workloads plus GIL CPU contrast, measured on Linux localhost (lab).