Meta Releases Open-Weight Muse Spark Model for Coding, Agentic Tasks

3-line summary

• Meta released an open-weight version of its Muse Spark model on October 15, aimed at coding and AI-agent tasks, letting developers download, modify, and adapt it. The model has 816 billion total parameters with 42 billion active at a time, and supports a context window of up to 1 million tokens.
• It can run locally on two Apple M5 Ultra Mac Studios, and is also available through some API providers. Meta previously released a smaller open-weight model, Muse Glimmer, in August; CEO Mark Zuckerberg has said advanced AI should not be concentrated among a few companies.
• The report did not include head-to-head performance comparisons against competing models.

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