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Zuckerberg says Muse Spark open weights are coming, without naming a model or a date
A Zuckerberg post on X, surfaced as r/LocalLLaMA's top thread of the day at 782 upvotes, says an open-weights Muse Spark release is on the roadmap alongside larger models. No date and no specific checkpoint were named, and Muse Spark 1.3 itself shipped closed-weight the same day. The top-voted local reaction is that Spark will be too large to run anyway, with people asking for something between Glimmer and Spark or for Llama 5 instead.
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