Meta’s new model is Muse Spark， and meta.ai chat has some interesting tools (opens in new tab)

📌 One-Sentence Summary Simon Willison explores Meta's new Muse Spark model, revealing its sophisticated toolset including code execution, visual grounding, and sub-agent spawning. 📝 Summary Meta has released Muse Spark, a new frontier-class model competitive with GPT-5.4 and Gemini 3.1 Pro. While currently a private API, it is available via meta.ai. Technical expert Simon Willison analyzes the model's capabilities, discovering a powerful hidden toolset. Key features include a Python code inte...