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Reflection's Beam, its first open-weight model, is now live on Together AI

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Together AI says Reflection's Beam is now available on its platform. Beam is a roughly 501B-parameter MoE model with 23B active parameters, built for coding and long-horizon agentic work, with a 1M-token context window and an Apache 2.0 license.

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The post gives the parameter count, active parameters, context length, and license for Reflection's first open-weight model, useful for comparing its specs and deployment terms.

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America’s next top model, Reflection’s Beam, is now live on Together AI.

Trained on Together GPU Clusters, Beam is Reflection’s first open-weight model.

  • ~501B-parameter MoE, 23B active
  • Built for coding + long-horizon agentic work
  • 1M-token context window
  • Released under an Apache 2.0 release

Try Beam now https://www.together.ai/models/reflection-beam

Source: Together AI · x.comPublished · added here

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AI agentsAI codingOpen-source ecosystemDeployment & engineeringModel releases