Reflection ships Beam: 501B MoE open model with 23B active, 1M context, Apache 2.0
ben_burtenshaw · x · 2026-10-16
Reflection AI released its first open-weight model, Beam-1.0, now on Hugging Face: a 501B MoE with 23B active params, 1M-token context, built for coding and agentic workloads with a token-efficient design, under Apache 2.0.
Day-0 support ships in transformers, vLLM, and SGLang. The HF team stress-tested it and published accompanying SFT + RL training recipes.
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