chore: remove 3.13 freethreaded builds#1609
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kevinjqliu
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Jun 25, 2026
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interesting
As of April 2026, we suggest not enabling builds for Free-threaded Python 3.13 going forward. The 3.13t release was considered experimental, is approximately 30% slower in single-threaded performance than 3.14t, and does not include a number of safety fixes for builtins and the standard library that were included in 3.14t. Free-threaded 3.14 also has better ecosystem compatibility than 3.13.
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Thanks @kevinjqliu . Especially since we never released these wheels I don't think it's any issue to remove the 3.13 versions. |
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Which issue does this PR close?
None.
Rationale for this change
The experimental freethreaded python in 3.13 has been reported as having difficulty and support for 3.13 as dropped in PyO3, so before we release this version we may as well drop 3.13t.
https://py-free-threading.github.io/ci/#building-free-threaded-wheels-with-cibuildwheel
https://github.com/PyO3/pyo3/releases/tag/v0.29.0
What changes are included in this PR?
Remove 3.13 free theaded build.
Are there any user-facing changes?
None