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Simon Willison's notes on Muse Glimmer 30B, Meta's first Apache 2.0 model (@simonw)
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Simon Willison's notes on Meta's Muse Glimmer 30B, the company's first open-weight model under Apache 2.0 rather than the Llama line's custom non-OSI license.
In plain words
- Simon Willison published notes about Muse Glimmer, Meta's first downloadable artificial intelligence system released under the Apache 2.0 license.
- Meta's earlier Llama releases used a custom license that was not recognized as an open-source license.
- This matters to developers because licensing rules determine how they may use Meta's downloadable artificial intelligence system.
Appeared in
- In LangChain's benchmark, only 7% of agent turns needed a frontier model
Aug 12, 2026 · from X
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