Nathan Lambert
@natolambert
Open model research, founder, director @trillium_labs. Prev. co-led Olmo at Ai2.
Writes @interconnectsai, wrote
Joined December 2014
964 Following 109.4K Followers
Okay now I really gotta blog ๐
Today weโre 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:
โ 816B total / 42B active parameters
โ 1M token context window
โ Natively multimodal across text, image, video, audio
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