tech
April 8, 2026
Meta's Muse Spark is here
In short: Meta has released Muse Spark, the first model from Meta Superintelligence Labs, the unit it assembled under Alexandr Wang after spending $14.3 billion to acquire a stake in Scale AI. Rebuilt from scratch over nine months, the model is natively multimodal, introduces a “Contemplating” reasoning mode that runs sub-agents in parallel, and is now powering Meta AI across the company’s platforms. In a break from Meta’s Llama heritage, it is closed source.
TL;DR
- Meta released Muse Spark, the first model from Meta Superintelligence Labs, rebuilt over nine months.
- The model is natively multimodal, accepting voice, text, and image inputs, with text-only output.
- It includes a "Contemplating" reasoning mode that runs sub-agents in parallel.
- Muse Spark powers Meta AI and is now closed source, a departure from Meta's Llama heritage.
- The model shows strengths in visual understanding and health-related reasoning, leveraging Meta's platform data.
- Benchmarks indicate mixed performance, excelling in specific areas like CharXiv Reasoning and HealthBench Hard, but trailing rivals in abstract reasoning.
- Meta plans to eventually release future versions under an open-source license.
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