{"schema":"postcutoff/event@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/e/2026-08-10-meta-muse-glimmer-open-weights/","md":"https://postcutoff.com/e/2026-08-10-meta-muse-glimmer-open-weights/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"2026-08-10-meta-muse-glimmer-open-weights","date":"2026-08-10","date_precision":"day","short_title":"Meta returns to open weights with Muse Glimmer, a 30B Apache-2.0 agentic model","deck":null,"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.","category":"open-source","category_label":"Open source","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":[{"n":1,"title":"Meta AI Research - Introducing Muse Glimmer","url":"https://research.meta.ai/blog/introducing-muse-glimmer-open-agentic-model","type":"official","group":"primary","domain":"research.meta.ai"},{"n":2,"title":"Hugging Face - meta-models/Muse-Glimmer-30B","url":"https://huggingface.co/meta-models/Muse-Glimmer-30B","type":"code","group":"primary","domain":"huggingface.co"},{"n":3,"title":"Meta developer page - Muse Glimmer","url":"https://developer.meta.com/ai/models/muse-glimmer/","type":"docs","group":"primary","domain":"developer.meta.com"},{"n":4,"title":"VentureBeat - Meta returns to open source with Muse Glimmer","url":"https://venturebeat.com/technology/meta-returns-to-open-source-with-muse-glimmer-an-apache-2-0-licensed-30b-parameter-ai-model-optimized-for-agents-available-now","type":"press","group":"press","domain":"venturebeat.com"},{"n":5,"title":"MarkTechPost - Meta AI releases Muse Glimmer","url":"https://www.marktechpost.com/2026/08/10/meta-ai-releases-muse-glimmer/","type":"press","group":"press","domain":"marktechpost.com"}],"official":3,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Meta"],"title":"Meta returns to open weights with Muse Glimmer, a 30B Apache-2.0 agentic model","summary":"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. It was Meta's first open-weight release of the Muse era and its first under a fully permissive license (Llama used a custom license).","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"],"key_numbers":[],"tags":["meta","msl","muse","open-weights","apache-2.0","local-ai","agents"],"science":null,"body_md":"## What happened\n\nMeta published **Muse Glimmer**, a 30B open-weight model built for agentic work (multi-step reasoning, tool use, long\ntrajectories, coding-harness compatibility) that runs fully on consumer hardware. It ships with a lightweight DFlash\ndrafter for speculative decoding and a perception encoder for images.\n\n## Why it matters\n\nAfter shifting its frontier Muse models to closed weights in April, Meta re-entered the open-weight race - under a\nmore permissive license than Llama ever had - directly against strong Chinese open models (Qwen) and Google's Gemma\nin the local-agent segment.","disputed":[],"related":[{"id":"2026-08-05-meta-muse-code-spark-1-2","url":"https://postcutoff.com/e/2026-08-05-meta-muse-code-spark-1-2/","date":"2026-08-05","date_precision":"day","short_title":"Meta launches Muse Code terminal coding agent powered by Muse Spark 1.2","deck":null,"takeaway":"Every frontier lab now ships its own terminal coding agent; Muse Code is Meta's entry into the most commercially valuable agent category of 2026.","category":"agents","category_label":"Agents","importance":3,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":6,"official":4,"filed":"2026-09-29","updated":"2026-09-30","orgs":["Meta"]},{"id":"2026-04-08-meta-muse-spark","url":"https://postcutoff.com/e/2026-04-08-meta-muse-spark/","date":"2026-04-08","date_precision":"day","short_title":"Meta Superintelligence Labs debuts Muse Spark, its first model","deck":null,"takeaway":"On 2026-04-08 Meta Superintelligence Labs (led by Alexandr Wang) released Muse Spark (code-named Avocado), the first model of the new Muse series and the result of a nine-month ground-up rebuild of Meta's AI stack.","category":"model-release","category_label":"Model releases","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":7,"official":5,"filed":"2026-09-29","updated":"2026-10-29","orgs":["Meta"]}],"people":[],"posts":[],"videos":[{"id":"pbs-newshour-meta-open-source-model-zuckerberg-essay","title":"What Meta's new open-source AI model means for the future of artificial intelligence","url":"https://postcutoff.com/v/pbs-newshour-meta-open-source-model-zuckerberg-essay/"}],"models":[],"changes":[{"date":"2026-09-29","type":"filed","text":"Created"}],"provenance":{"agents":[{"model":"Claude Opus 5.5","maker":"Anthropic","tool":"Claude Code"}],"filed":"2026-09-29","run":null,"sources_read":null,"updated":"2026-09-29","human_review":null,"version":{"date":"2026-10-04"}},"gaps":[{"model_id":"gpt-6-astra","name":"GPT-6 Astra","cutoff":"2026-04","days_after":102,"in_training_data":false},{"model_id":"claude-opus-5-5","name":"Claude Opus 5.5","cutoff":"2026-06","days_after":41,"in_training_data":false},{"model_id":"gemini-4-hydrogen","name":"Gemini 4 Hydrogen","cutoff":"2026-03","days_after":132,"in_training_data":false},{"model_id":"grok-4-7","name":"Grok 4.7","cutoff":"2026-05","days_after":71,"in_training_data":false}],"short_url":"https://postcutoff.com/s/meta-returns-open-weights"}