Reflection Beam 1.0

Name: Reflection Beam 1.0
Author: Reflection Ai

Reflection Ai

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Version History

1.0majorOctober 16, 2026

Reflection AI released Beam 1.0, a sparse MoE model with 501B total and 23B active parameters for agentic coding, with Apache 2.0 weights on Hugging Face. It is available on Amazon SageMaker JumpStart in US East (N. Virginia) and US East (Ohio).

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model releaseReflection Ai

Reflection AI releases Beam, a 501B-parameter open-weight MoE coding model under Apache 2.0

Reflection AI has released Beam 1.0, an open-weight sparse mixture-of-experts model with 501 billion total and 23 billion active parameters, built for agentic coding. Weights ship under Apache 2.0 on Hugging Face, and the model is available through Amazon SageMaker JumpStart in two US regions.

October 16, 2026 · 3:35 PM3 min read

Reflection AI Beam open-weight