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Reflection AI Beam: Why 501B Parameters That Cost Like 23B Matter More Than the Leaderboard

Reflection AI's Beam, announced October 5, 2026, is a 501-billion-parameter open-weight model that activates only 23 billion parameters per task. The headline number is the 501B. The number that decides whether anyone actually deploys it is the 23B. That split is the whole story of Beam — and the r…

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  1. 2026-10-15 13:25 · DEV Community — Machine Learning
    Reflection AI Beam: Why 501B Parameters That Cost Like 23B Matter More Than the Leaderboard

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