The CPython JIT compiler for Python 3.15 has achieved its performance targets ahead of schedule, showing 11-12% speed improvements on macOS AArch64 and 5-6% improvements on x86_64 Linux compared to the standard interpreter. This represents significant progress in Python's performance optimization efforts.
Background
Python has been working on implementing a JIT (Just-In-Time) compiler to improve execution speed, which is a major focus for the language's performance optimization.
- Source
- Simon Willison
- Published
- Mar 18, 2026 at 05:48 AM
- Score
- 7.0 / 10