Meta launches Muse Spark Open: 816B-parameter open-weight coding model with 1M context
bigwheels · hn · 2026-10-16
Meta released Muse Spark Open, an open-weight, coding-optimized reasoning model (816B total / 42B active MoE), now on Hugging Face and dev.meta.ai.
Key specs:
- Trained for agentic coding workflows: first-attempt accuracy, tool calling, large codebase understanding
- 1M-token context window, enough to ingest a full project with dependencies
- Multimodal input: text, images, documents, audio, audio-video
- Released under the Muse Model License with a usage policy
It marks Meta's biggest push into coding/agent models, with weights freely downloadable.
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