Autograd v1.9.1

29 June 2026

This is a small patch release that fixes a gradient regression in reduction operations.

Bug fixes

• Reduction gradient functions now accept **kwargs, so no longer fail with a TypeError when NumPy passes an out=None argument through to them. This restores differentiation of reductions over ArrayBox values in a few edge cases that broke after #717 (#789, by @fjosw).

Full CHANGELOG: v1.9.0...v1.9.1