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Meta are back in the open weights game, releasing Muse Glimmer as a brand new 30B model under a clean Apache 2.0 license, which is a step up from the janky Llama licenses of old.
Meta returns to the open-weights space with Muse Glimmer, a new 30B model released under a clean Apache 2.0 license, contrasted favorably against prior Llama licensing. ✦ AI generated
Simon Willison · Simon Willison's Weblog · 2026-08-10 · original ↗
Meta are back in the open weights game! Muse Glimmer is a brand new 30B model under a clean Apache 2.0 license (a step up from the janky Llama licenses of old).
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- ·Meta is back in the open-weights game
- ·Muse Glimmer is a brand new 30B model
- ·Released under a clean Apache 2.0 license
- ·A step up from the janky Llama licenses of old
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provides context → Muse Glimmer handles reliable tool use, invoking tools with precise schemas throughout extended workflows.Simon Willison · Simon Willison's Weblogprovides context → Muse Glimmer is optimized for end-to-end agentic task completion, achieving strong success rates on full-task benchmarks including DeepSearch QA, MCP-Atlas, τ-Bench and SWE-Bench.Simon Willison · Simon Willison's Weblogprovides context → Muse Glimmer performs multi-step reasoning, chaining reasoning over long horizons and sustaining coherent plans across complex, extended workflows.Simon Willison · Simon Willison's Weblog