# cuDNN 9.21.0 for CUDA 12.x — Software interface version compatibility

For cuDNN 9.21.0 for CUDA 12.x, product is cuDNN; software version is 9.21.0; dependency version is CUDA 12.x; minimum nvidia driver (linux) is >=525.60.13; minimum nvidia driver (windows) is >=527.41, recorded from its source on 2026-08-27; source re-checked 2026-10-27.

- **Product:** cuDNN _(our reading, not quoted from the source)_
- **Version pairing:** cuDNN 9.21.0 for CUDA 12.x _(our reading, not quoted from the source)_
- **Software version:** 9.21.0 _(verified: appears in the quote below)_
- **Dependency version:** CUDA 12.x _(verified: appears in the quote below)_
- **Minimum NVIDIA driver (Linux):** >=525.60.13 _(verified: appears in the quote below)_
- **Minimum NVIDIA driver (Windows):** >=527.41 _(verified: appears in the quote below)_

## What the source says

> cuDNN 9.21.0 for CUDA 12.x | 12.9 12.8 12.6 12.5 12.4 12.3 12.2 12.1 12.0 | Yes | >=525.60.13 | >=527.41

## Source

- https://docs.nvidia.com/deeplearning/cudnn/backend/v9.21.0/reference/support-matrix.html

Last verified: 2026-10-27. Review by: 2026-12-26.
Part of [Software interface version compatibility](https://referencesource.org/software-interface-version-compatibility/).