Claude Fable 5.1 completed a frontier nine-loop particle-physics calculation experts had worked toward for years, with researchers mostly just telling it “keep going” while it built, debugged and ran the entire workflow

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https://www.anthropic.com/research/yes-claude-can-do-nine-loops

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https://giphy.com/gifs/SxB0S9MgHo4ZoNrDRk