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Reflection AI's Beam: Why 23B Active Parameters Matter More Than 501B

Reflection AI just introduced Beam , its first open-weight model. The headline number is 501 billion parameters. The number builders should actually care about is 23 billion .

  • Beam's 23 billion active parameters matter more than 501 billion total parameters for developers.
  • Model pretraining on 23.8 trillion tokens completed in under four weeks on GB300 NVL72 cluster.

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