Reflection releases Beam, a 501B-parameter MoE model under Apache 2.0

zwentz · hn · 2026-10-16

Reflection.ai has released Beam, a 501B-parameter mixture-of-experts model under the Apache 2.0 license, making it one of the largest open-weight models to date. HN discussion is underway on its benchmark performance and what such a permissive license means for the open-source ecosystem.

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