📅 Oct 5, 2026
Nvidia-backed startup Reflection AI has unveiled Beam, its first frontier open-weight model.
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Founded in 2024 by former DeepMind researchers Misha Laskin and Ioannis Antonoglou, the Brooklyn startup is going toe-to-toe with the biggest AI labs.
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Beam has 501 billion parameters with just 23 billion active per token, trained on 23.8 trillion tokens with a 1-million-token context window.
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The startup claims Beam matches China's Z.ai GLM-5.2 on reasoning benchmarks while using 3 to 4 times less inference compute.
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Reflection plans to release Beam's weights under an Apache 2.0 license, plus a technical report and developer tools, later in October.
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