Meta Just Revealed Its Agent Architecture. The Tool List Tells Us Everything.
When Meta announced Muse Spark today—their first major model release since Llama 4 nearly a year ago—the benchmarks got most of the attention. But the real story wasn't in the model's performance numbers. It was in what Meta accidentally revealed about its agent strategy. The model itself is notable: hosted (not open weights), competitive with Opus 4.6, Gemini 3.1 Pro, and GPT 5.4 on selected benchmarks, though notably behind on coding workflows. Three modes are exposed: Instant, Thinking, and...
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