Poolside Releases Laguna S: 118B Open-Weight Model Built in 8 Weeks

baseten · x · 2026-07-22

AI company Poolside has announced the release of its open-weight model, Laguna S. The model features 118B total parameters with 8B active, was built in just 8 weeks, and supports a 1M context window. The team emphasized their commitment to being an American open-source lab and discussed the economics of open weights and the critical question of who gets to build intelligence. They also shared deep insights into the future of software engineering, focusing on behaviors over IQ, alongside details about their model factory architecture.

Related event: Poolside Releases Laguna S 2.1: 118B Open-Weight Coding Model(28 posts)→

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