Designing efficient quantum circuits with Claude
The gist
Anthropic says its Claude Mythos 5 designed quantum circuits beating the best published ones.
The results come from a single 53-hour run and have not yet been independently reproduced.
How it unfolded
- Oct 15, 2026The paper "Discovering state-of-the-art quantum circuits with large language models" (arXiv 2610.22367, 46 pages), led by Andi Gu, is submitted.
- Oct 16, 2026Anthropic publishes a research note saying Claude, given plain-language specifications for eight circuits plus an automated evaluator, designed circuits improving on the best published ones, sometimes by an order of magnitude or more.
- Oct 16, 2026Anthropic says one point-addition design uses 12% more qubits but 17x fewer gates than the smallest previous design, from a single 53-hour run, and that Claude cut a decoder's gate count by a factor of 12 versus Google Quantum AI's previous construction.