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Reflection AI debuts Beam open-weight reasoning model

Nvidia-backed Reflection AI unveiled Beam, its first open-weight model, which it says rivals GLM-5.2 on reasoning with far less inference compute. Weights are due this month.

First seen 5 Oct, 19:33 UTC on TechCrunch3 sourcesLast update 2h ago

What the sources say

Linked, never rewritten. Official means the lab itself.

Official0

No word from Reflection AI yet.

Press2

TechCrunch· 5 Oct, 19:33Reflection debuts Beam, a open-weight AI model to rival Chinese models at lower compute costSiliconANGLE· 6 Oct, 00:46Reflection AI debuts open-source Beam model with 501B parameters

Community1

r/singularity· 5 Oct, 19:56Beam announcement, open model with 501B parameters and 23B active, full weights to be released later this month, undergoing final red-teaming and evaluations, focus on coding and agentic performance

How it unfolded

Every source in the order it appeared. Times in UTC.

5 Oct 19:33TechCrunch Reflection debuts Beam, a open-weight AI model to rival Chinese models at lower compute cost5 Oct 19:56r/singularity Beam announcement, open model with 501B parameters and 23B active, full weights to be released later this month, undergoing final red-teaming and evaluations, focus on coding and agentic performance6 Oct 00:46SiliconANGLE Reflection AI debuts open-source Beam model with 501B parameters