Poolside Releases Laguna S: An 118B Parameter Open-Source Model
Madisonkanna · x · 2026-07-22
AI coding company Poolside has released Laguna S, an open-source model with 118B total parameters and 8B active parameters. It supports a 1M context window and was built in just 8 weeks.
In an accompanying deep-dive interview, the founder discussed several core topics:
- Motivation for Open Source: Breaking the oligopoly on intelligence held by a few tech giants.
- Future of Software Engineering: Model behaviors matter more than raw IQ.
- Economics of Open Weights: The business logic of open weights and the critical 12-18 month window.
- American Open Source Lab: The positioning and responsibility of being a US-based open-source lab.
Related event: Poolside Releases 118B Open-Weight Coding Model Laguna S 2.1(35 posts)→
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