Muse Spark Open is Meta’s new open-weight AI model, released on 15 October 2026, and Meta describes it as the most capable US open-weight model to date. Unlike the Muse Spark model inside the Meta AI app, you can download the weights, run them on your own hardware or call them through third-party APIs. This guide explains what Muse Spark Open is, what the licence allows, the hardware you realistically need, and four practical ways to start using it today, from a two-minute API call to a full self-hosted deployment.
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How to Use Muse Spark Open: Download, Run and API Guide (2026)
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