Corroborated event · 3 outlets
Reflection released Beam, its first open-weight model, a mixture-of-experts system that activates 23 billion of its 501 billion parameters per token and aims to match GLM 5.2 on coding and reasoning.
More coverage of this story (2)
Reflection AI releases open-weight Beam model with 501B parameters
Reflection AI debuts open-source Beam model with 501B parameters
SiliconANGLE AI · 06 Oct 2026, 00:46
Reflection debuts Beam, an open-weight AI model to rival Chinese models at lower compute cost
TechCrunch AI · 05 Oct 2026, 19:33
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