At its October 2026 launch, Meta called Muse Spark Open the most capable US open-weight AI model to date

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From the articleMuse Spark Open is Meta's answer to Qwen, GLM, and Kimi in the open-weight raceAlso in Introducing Muse Spark Open, The Most Capable US Open-Weight Model to Date

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Muse Spark Open is Meta's answer to Qwen, GLM, and Kimi in the open-weight race

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Introducing Muse Spark Open, The Most Capable US Open-Weight Model to Date

Meta's research blog post launching Muse Spark Open, its 816-billion-parameter open-weight multimodal model, with availability, licence and safety details.