Meta's new model is Muse Spark, and meta.ai chat has some interesting tools
BlogSimon WillisonApr 8, 2026
AI Summary
Meta's first major release since Llama 4 — Muse Spark launches as hosted-only with Instant/Thinking modes and benchmarks competitive with Opus 4.6 and Gemini 3.1 Pro. Simon runs it through his signature pelican-on-a-bicycle benchmark.
From the original
Sponsored by: Honeycomb — AI agents behave unpredictably. Get the context you need to debug what actually happened. Read the blog Meta announced Muse Spark today, their first model release since Llama 4 almost exactly a year ago. It’s hosted, not open weights, and the API is currently “a private…
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