Meta has introduced Muse Spark, a multimodal reasoning model that supports tool-use, visual chain of thought, and multi-agent orchestration. Muse Spark is the first step towards personal superintelligence and offers competitive performance in multimodal perception, reasoning, health, and agentic tasks. The model is available now, with a private API preview available to select users. Muse Spark's capabilities are expected to scale predictably and efficiently, with improvements in pretraining, reinforcement learning, and test-time reasoning.