cuda-bindings 12.9.3 Release notes#

Released on Oct 9, 2025

Highlights#

  • This is the last release that officially supports Python 3.9.

  • Python 3.14 is supported.

  • Experimental free-threaded builds for Python 3.13/3.14 are made available. Any bugs can be reported to our GitHub repo. More details are available in our cuda.bindings Support Policy docs.

  • Automatic CUDA library path detection based on CUDA_HOME, eliminating the need to manually set LIBRARY_PATH environment variables for installation.

  • The Python overhead of calling functions in CUDA bindings in driver, runtime and nvrtc has been reduced by approximately 30%.

  • On Windows, the pywin32 dependency has been removed. The necessary Windows API functions are now accessed directly.

  • Updated the cuda.bindings.runtime module to statically link against the CUDA Runtime library from CUDA Toolkit 12.9.1.

  • cyruntime.getLocalRuntimeVersion now uses pathfinder to find the CUDA runtime.

Known issues#

  • Updating from older versions (v12.6.2.post1 and below) via pip install -U cuda-python might not work. Please do a clean re-installation by uninstalling pip uninstall -y cuda-python followed by installing pip install cuda-python.

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