Anthropic says Claude Fable 5.2 designed three working electronic prototypes from short prompts, and Diode built the boards straight from its files

Anthropic's science team worked with Diode Computers, a company that designs and makes circuit boards, to test Claude Fable 5.2 on electronics design. From a short prompt for each device, the model produced the specifications, schematics, board layout and routing, 3D-printable enclosures, firmware and parts lists for three prototypes: a speakerphone, a voice-assistant hub and a handheld virtual pet.

Anthropic says “Diode manufactured all three boards directly from Claude's design files, without any back-and-forth over adjustments,” and that the devices work without fixes to their circuitry. On Diode's PCB Gym test, Fable 5.2 scored 69%, against 25% for Fable 5; on BenchCAD 2.1 it scored 83.5%.

The post lists the limits: the devices have not been through electrical validation, antenna tuning, thermal testing or certification, were not designed for mass production, and Diode's engineers did the physical building and testing. Anthropic notes that it has a commercial relationship with Diode. The post came out on the day Anthropic released Fable 5.2, tonight's lead.

• Claimed Diode manufactured all three boards directly from Claude's design files, and the devices work without fixes to their circuitry. Anthropic
• Claimed Fable 5.2 scored 69% on Diode's PCB Gym, against 25% for Fable 5, and 83.5% on BenchCAD 2.1. Anthropic
• Confirmed The devices have not been through electrical validation, antenna tuning, thermal testing or certification; Anthropic discloses a commercial relationship with Diode. Anthropic