Nathan Lambert
@natolambert
Open model research, founder, director @trillium_labs. Prev. co-led Olmo at Ai2.
Writes @interconnectsai, wrote
加入 December 2014
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Okay now I really gotta blog 🎉
Today we’re releasing Muse Spark Open, the most capable US open-weight model to date.
Built for coding and agentic work, it excels at long-horizon tasks, complex software engineering, and multi-step reasoning.
Key Model Specs:
→ 816B total / 42B active parameters
→ 1M token context window
→ Natively multimodal across text, image, video, audio
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