10 Sonnet 5.5 agents ran 15 hours autonomously and returned a 17,895-line math proof

141_1337 · reddit · 2026-09-30

A Reddit user reports letting 10 Claude Sonnet 5.5 agents autonomously research a math problem dating back to 1904; after 15 hours they returned a 17,895-line mathematical proof. If accurate, it's a striking showcase of long-horizon autonomous multi-agent work on serious mathematics.

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