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Reflection unveils Beam, an open-source agentic model with 501B parameters

Reflection has unveiled Beam, an open-source agentic model with 501 billion total parameters and 23 billion active parameters. This model reportedly offers frontier reasoning efficiency and advances open-source capabilities in coding and agentic tasks. Full weights for Beam are slated for release this month, with Together AI and Nvidia participating in related events. AI

IMPACT Sets a new benchmark for open-source agentic models, potentially accelerating research and development in this area.

RANK_REASON Frontier-lab model release with system card [lever_c_demoted from frontier_release: ic=1 ai=1.0]

Read on X — Together (inference / OSS) →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Reflection unveils Beam, an open-source agentic model with 501B parameters

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0 / 100
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Significant
Frontier-lab model release with system card [lever_c_demoted from frontier_release: ic=1 ai=1.0]
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Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
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model release, product
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High
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3 days old
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COVERAGE [1]

  1. X — Together (inference / OSS) TIER_1 English(EN) · togethercompute ·

    Congrats to the Reflection team on Beam 🎉

    Congrats to the Reflection team on Beam 🎉 Be sure to join us next week at our NYC meet-up with the Reflection team and NVIDIA https://t.co/mM6v7h3wRO https://t.co/LjQYZ5fQJ1