Reflection releases Beam, a 501B-parameter open model
Teams can run and customize Beam on their own infrastructure, provided they have the memory its 501B parameters require.
• Reflection has released Beam, a 501B-parameter text model for coding and agentic tasks.
• Beam has a one-million-token context window and activates about 23B parameters per token.
• The Apache 2.0 model is available on Hugging Face and through listed Inference Providers.
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October 16, 2026 17
