SettledOpen source
Reflection AI releases open-weight Beam, 501B parameters under Apache 2.0
Reflection AI released Beam on Oct. 16, a mixture-of-experts model with 501B total and 23B active parameters, with weights on Hugging Face in BF16, FP8 and NVFP4 under Apache 2.0. It also released a speculative-decoding drafter, a safety technical report and the Mirror CLI agent harness. Self-distillation recipes are promised in coming days.
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Made the five · #2 on Saturday, October 17, 2026
Reflection ships Beam's 501B weights under Apache 2.0
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Reflection AIreflection.ai/blog/beam-is-availableCoverage · 2 articles, oldest first
Friday, October 16, 2026
Reflection AIPrimary
Reflection AI releases open-weight Beam, 501B parameters under Apache 2.0