Latent Space AINews: Meta Superintelligence Labs Ships First Frontier Model on Completely New Stack

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Latent Space's AINews covers Meta Superintelligence Labs shipping Muse Spark as the first model in the new Muse series — a deliberate, scientific scaling approach where each generation validates before going bigger. The newsletter contextualizes the MSL origin story: CEO Zuckerberg was reportedly unhappy with Llama's pace versus ChatGPT and Claude, leading to the Alexandr Wang recruitment and $14.3B Scale AI investment for a 49% stake.