Reflection releases Beam, a 501B open model for coding and agentic work
Welcome Beam: a 501B open model you can own, customize, and scale
What happened
Reflection released Beam on Hugging Face, a 501B MoE model with 23B active parameters per token, a 1M-token context window, and an Apache 2.0 license. The text-only model targets coding and agentic work, with BF16, FP8, and NVFP4 checkpoints and day-0 support in transformers, vLLM, and SGLang. Hugging Face provides deployment and post-training recipes alongside its own task evaluations and demos.
Why it matters
The deployment guidance distinguishes active computation from total weight memory, helping teams assess hardware requirements for running and adapting a sparse model with a long context window.
Hugging FaceAgentsAI codingReasoningOpen sourceModel releases#Model release#Coding#Agent#Reasoning#Open-source ecosystem#Hugging Face
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