Python 3.13.1 Released November 2025 ((free)) Now

Elena laughed out loud. The sound echoed off the empty office walls.

A critical CVE was announced—a use-after-free in the new biased reference counter, only triggerable when mixing subinterpreters and C extensions that manually manipulated PyObject* refcounts. The entire Python security team held an emergency sprint. python 3.13.1 released november 2025

Python 3.13.1 is the version that turns the experimental excitement of 3.13 into a reliable tool. It doesn't have the hype of a major version launch, but it has the reliability that professional developers rely on. Elena laughed out loud

The chat exploded with laughing emojis and heart reacts. The entire Python security team held an emergency sprint

★★★★☆ (Essential for 3.13 users, recommended for everyone else.)

futures = [] with interp1.run() as i1: futures.append(i1.call(mandel_chunk, (-2.0, -1.0, -1.5, 0.0, 500, 500))) # ... repeat for four interpreters ...

# November 2025 changed everything. # Let's see what November 2030 brings.