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Python 3.12 improved official benchmark performance by about 5% over 3.11.

The Claim

Python 3.12 runs about 60% faster than Python 3.11 on the official benchmark suite.

Verified by Lenz ·

The Short Version

Official Python materials estimate that Python 3.12 is about 5% faster than 3.11 overall, not 60%. The larger figure belongs either to Python 3.11’s gains over 3.10 or to isolated workload-specific improvements. Independent benchmarks also indicate modest, uneven gains rather than a suite-wide 60% increase.

Caveats

  • The 10–60% range describes Python 3.11 compared with Python 3.10, not 3.12 compared with 3.11.
  • Large improvements in individual workloads cannot be generalized to the full benchmark suite.
  • Third-party results vary by workload and sometimes show little improvement or slight regressions.

The Receipts

  1. Python Release Python 3.12.0rc3 | Python.org

    python.org

  2. Python 3.12.0 (final) is here - Core Development - Discussions on Python.org

    discuss.python.org

  3. PEP 703: Making the Global Interpreter Lock Optional (3.12 updates) - #18 by ambv - PEPs - Discussions on Python.org

    discuss.python.org

  4. [Python-announce] Python 3.12.0 (final) now available.

    mail-archive.com

  5. What's New In Python 3.11 — Python 3.14.7 documentation

    docs.python.org

  6. What’s New In Python 3.12 — Python 3.12.1 documentation

    docs.python.org

  7. Python 3.11 Performance Benchmarks Show Huge ...

    phoronix.com

  8. What’s New In Python 3.11 — Python 3.11.15 documentation

    docs.python.org

  9. PEP 709 – Inlined comprehensions | peps.python.org

    peps.python.org

  10. Python 3.12.0 release candidate 1 released | Python Insider

    blog.python.org

+ 8 more sources — see the full list on Lenz

Filed Under

Official Python Benchmark SuitePython 3.11Python 3.12

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