Claude Fable 5.2 designed three working gadgets with Diode

Working with board maker Diode Computers, Anthropic had Claude Fable 5.2 design a speakerphone, a voice-assistant hub and a handheld virtual pet, and all three prototypes worked without fixes to their circuitry. Anthropic itself says none has been through electrical validation, thermal testing or certification, and Diode engineers had to build and test them by hand.
On PCB Gym, Diode’s internal benchmark for placing components and routing connections, Fable 5.2 scored 69% against 25% for Fable 5. Diode manufactured all three boards straight from Claude’s design files, with no rounds of adjustments.
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