Developing story · 2 episodes · 5 Oct to 16 Oct
Reflection AI's Beam Model Saga
The saga chronicles Reflection AI's rapid development and release of the Beam model, a lightweight competitor to GLM 5.2. After the latest episode, Beam's open weights are now freely available under the Apache 2.0 license, expanding its accessibility.
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Reflection releases Beam’s open weights under Apache 2.0 license
Reflection released the weights for Beam, its first open-weight model, on October 16, 2026, under an Apache 2.0 license. The 501B-parameter mixture-of-experts model, introduced on October 5, was…
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Reflection AI debuts Beam, a 501B open-weight model rivaling GLM 5.2 with 3-4x less compute
Reflection AI has released Beam, its first open-weight AI model, a 501-billion-parameter Mixture-of-Experts model with 23 billion active parameters. The model was pretrained on 23.8 trillion tokens…
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