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Claude Mythos 5 designs quantum circuits, cutting gate counts 12x

By Drooid · Oct 16, 2026, 10:08 PM UTC · How we work

Summary

Story summary

Claude Mythos 5 AI autonomously designed quantum circuits that outperformed prior state-of-the-art on seven of eight tasks.
Andi Gu led the project through Anthropic’s STEM Fellows Program with Harvard and QuEra Computing.
Claude reduced Toffoli-gate counts and qubit needs in seven tasks and used up to 17× fewer gates for modular inversion.
The 53-hour experiment produced a reversible divsteps circuit and cut an optimizer decoder’s gate count twelvefold versus Google.

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Story summary

Claude Mythos 5 AI autonomously designed quantum circuits that outperformed prior state-of-the-art on seven of eight tasks.
Andi Gu led the project through Anthropic’s STEM Fellows Program with Harvard and QuEra Computing.
Claude reduced Toffoli-gate counts and qubit needs in seven tasks and used up to 17× fewer gates for modular inversion.
The 53-hour experiment produced a reversible divsteps circuit and cut an optimizer decoder’s gate count twelvefold versus Google.