As of: 2026-10-17 02:25 CEST.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
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# “New from our STEM Fellows Program: Designing more efficient quantum circuits with…”

Anthropic (@AnthropicAI), X, 2026-10-16.
Source: https://x.com/AnthropicAI/status/2111152183240511640

## Archived text

> New from our STEM Fellows Program: Designing more efficient quantum circuits with Claude.
> 
> Given plain-language instructions, Claude Mythos 5 designed quantum circuits that improve on the best published ones, sometimes by an order of magnitude or more.
> 
> More efficient circuits reduce the resources needed by quantum algorithms, which could bring quantum computing applications in chemistry and materials science within reach sooner.
> 
> Read more: https://www.anthropic.com/research/designing-efficient-quantum-circuits

Archived 2026-10-16 via fxtwitter (unofficial).
Counts: 141,619 views, 2,117 likes, 199 reposts, 211 replies (at fetch time)

## Cited in

- 2026-10-15: [Harvard–Anthropic team (with Mikhail Lukin) uses Claude Mythos 5 in an evolutionary search to beat state-of-the-art quantum circuits on seven of eight tasks](https://postcutoff.com/e/2026-10-15-llm-discovered-quantum-circuits-harvard-anthropic-mythos/)