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Reflection introduced Beam, a 501B-parameter mixture-of-experts AI model with 23B active parameters per token

Model release Provisional 68% confidence first seen

The coverage describes Reflection releasing the Beam model, a large mixture-of-experts architecture with 501 billion total parameters and 23 billion active per token. The articles highlight a shift toward deployment control and behavior evaluation for agents in addition to continued research progress.

Beam EmbeddingGemma 2 Google Mistral Mistral Large 4 OpenAI Reflection Arena TypeSafe

Source coverage

The Sequence Radar - Issue 948: Last Week in AI: Billions in Funding, Hundreds of Papers, One Big Leap? TheSequence The Sequence Learning Loop - Issue 950: Three Models, Three Ways to Make AI Smarter TheSequence

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