Meta AI: What is Muse Spark? And what happened to Llama?

Meta has introduced a new flagship AI model called Muse Spark and sent the Llama "herd" of models to the farm upstate. It's a dramatic shift in AI strategy from the company that was once pioneering open models.  Muse Spark is a multimodal reasoning model. It's basically the Facebook parent company's response to OpenAI, Anthropic, and Google Gemini. Unlike the Llama models, Muse Spark is a closed-weight proprietary model. You won't be able to download it from Hugging Face or run it on your o