# PyTorch 2.1 + CUDA 11.8 — Software interface version compatibility

For PyTorch 2.1 + CUDA 11.8, product is PyTorch; software version is 2.1; dependency version is 11.8, recorded from its source on 2026-08-04.

- **Product:** PyTorch
- **Version pairing:** PyTorch 2.1 + CUDA 11.8 _(unconfirmed — we could not tie this to the quote below)_
- **Software version:** 2.1
- **Dependency version:** 11.8

## What the source says

> PyTorch 2.1 → CUDA 12.1, CUDA 11.8

## Source

- https://gigagpu.com/pytorch-cuda-version-compatibility/

Last verified: 2026-08-04. Review by: 2026-10-03.
Part of [Software interface version compatibility](https://referencesource.org/software-interface-version-compatibility/).