← Monday, October 19, 2026InferenceRelease
Muse Spark Open arrives in SageMaker JumpStart with BF16 and NVFP4 variants
The coding-optimized model is available as BF16 and NVFP4 variants, with a one-million-token context, and can be deployed to a SageMaker endpoint. The variants and managed deployment path are useful details when evaluating model-serving options.
- What
- Muse Spark Open is Meta's coding-optimized open-weight reasoning model, offered in BF16 and NVFP4 variants through SageMaker JumpStart.
- How
- Its MoE has 816 billion total parameters and 42 billion active per token; it accepts text, images, documents, audio and audio-video, and returns text.
- Why it matters
- A 1-million-token context and long-horizon agentic behavior target repository-scale coding tasks; SageMaker endpoints avoid managing serving infrastructure.
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