Reflection AI Drops Beam, a 501B Open-Weight Agent Model for Coding

Reflection AI opens the weights of Beam, a 501B Mixture-of-Experts model, alongside a 40+ partner ecosystem and a full agent toolchain.

Source

Reflection

Published

Oct 16, 2026, 1:01 PM

Author

AlphaSignal Newsroom

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1 min read

Reflection AI opens the weights of Beam, a 501B Mixture-of-Experts model, alongside a 40+ partner ecosystem and a full agent toolchain.

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