Cpython Release November 2025 New Link

The headline feature of 2025 is the gradual removal of the Global Interpreter Lock (GIL). Initially released in Python 3.13 as an experimental build, the November 2024 update of CPython 3.14 makes --disable-gil a fully supported configuration for single-threaded processes.

What’s new in November 2025:

Why this matters: This release marks the moment data scientists and web framework maintainers (Django, FastAPI) can safely test concurrency without the threading bottleneck. cpython release november 2025 new

Download from python.org/downloads/release/python-3141 (ensure checksum validation). The headline feature of 2025 is the gradual

Every November, the core developers release an internal memo called "Performance of the Next Release." In 2025, the numbers are impressive. Why this matters: This release marks the moment

| Metric | Python 3.12 (Baseline) | Python 3.13 | Python 3.14.1 (Nov 2025) | | :--- | :--- | :--- | :--- | | Geometric mean (pyperformance) | 1.00x | 1.18x | 1.29x | | Regex operations | 1.00x | 1.10x | 1.35x | | Async I/O | 1.00x | 1.05x | 1.20x (IO_uring support) | | Startup time (Django app) | 2.1 sec | 1.9 sec | 1.6 sec |

The November release specifically patches a slowdown discovered in io module buffering and optimizes the asyncio event loop to use io_uring on Linux kernels 6.0+.