Meta returns to open weights with Muse Glimmer, a 30B Apache-2.0 agentic model
Confirmed
Importance: major (4 of 5)The takeaway
On 2026-08-10 Meta released Muse Glimmer, a 30B-parameter open-weight model under Apache 2.0, optimized for local, always-on agent workflows and designed to run on a single consumer GPU or Mac.
Status
- Claim
Confirmed
- Our reporting
- High confidence
- Importance
- Major (4 of 5)
- Last verified
- 29 September 2026
Your AI and this story
- GPT-6 Astra102 days after its cutoff
- Claude Opus 5.541 days after its cutoff
- Gemini 4 Hydrogen132 days after its cutoff
- Grok 4.771 days after its cutoff
None of these four assistants can know about it. The closest, Claude Opus 5.5, stops 41 days before it.
Key facts
- Released 2026-08-10; 30 billion parameters; weights at huggingface.co/meta-models/Muse-Glimmer-30B
- License: Apache 2.0 (unrestricted commercial use)
- Dense model (per MindStudio) with a dedicated perception encoder for multimodal input
- Quantized weights under 20GB; fits in 24GB or 32GB memory envelopes
- DFlash speculative decoding: 3.1x faster decode on RTX 5090, 1.8x on M5 Max, 1.5x on M4 Max
- Compared by Meta against Gemma4-31B and Qwen3.6-27B on agentic benchmarks
What happened
Meta published Muse Glimmer, a 30B open-weight model built for agentic work (multi-step reasoning, tool use, long trajectories, coding-harness compatibility) that runs fully on consumer hardware. It ships with a lightweight DFlash drafter for speculative decoding and a perception encoder for images.
Why it matters
After shifting its frontier Muse models to closed weights in April, Meta re-entered the open-weight race - under a more permissive license than Llama ever had - directly against strong Chinese open models (Qwen) and Google’s Gemma in the local-agent segment.
Sources
5 sources from 5 sites. Numbers match the chips in the text.
5 sources: 3 primary, 2 press
Primary
- Meta AI Research - Introducing Muse Glimmerresearch.meta.ai, official
- Hugging Face - meta-models/Muse-Glimmer-30Bhuggingface.co, code
- Meta developer page - Muse Glimmerdeveloper.meta.com, docs
Press
- VentureBeat - Meta returns to open source with Muse Glimmerventurebeat.com, press
- MarkTechPost - Meta AI releases Muse Glimmermarktechpost.com, press
Changes
- Filed
