Reflection AI launches Beam 501B open-source model
Reflection AI Inc. has launched Beam, an open-source large language model featuring 501 billion parameters. The release follows the startup reaching a $25 billion valuation and reportedly entering a $6.3 billion agreement with SpaceX to rent Nvidia GB300 NVL72 systems used for the initiative. Claims are as reported; this summary makes no determination about accuracy or significance.
- First detected
- Oct 6, 2026
- Last updated
- Oct 6, 2026
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Why it matters
The debut introduces a massive 501-billion-parameter open-source alternative into the frontier model ecosystem. It also highlights the extreme capital and compute commitments startups are deploying via specialized hardware arrangements to train and serve very large foundational models.
Coverage
Primary/vendor sources vs independent reporting
Primary / vendor source: information published directly by the company, organization, government body or project involved. Useful as a primary source, but not independent confirmation.
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How this developed
Oct 6, 2026
Development detected
New reporting added
Reflection AI debuts open-source Beam model with 501B parametersSiliconANGLESource
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