# Automatic1111 optimized for Apple Metal, 40% faster SD 1.5

A new optimization brings Automatic1111, the popular Stable Diffusion web interface, to Apple's Metal graphics API. This update delivers a roughly 40% speed increase for SD 1.5 models on Mac hardware, making local image generation significantly more practical for Apple users.

**Importance:** 3/5

## Sources

### Technology
- [Hacker News](https://therad.ninja/from-8-10-seconds-to-3-7-teaching-automatic1111-to-speak-metal-on-an-m3-pro/) — Wed, 12 Aug 2026 13:41:12 +0000