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Poolside's Laguna S 2.1 is a small open-weight coding model that punches well above its size

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Poolside's Laguna S 2.1 is a small open-weight coding model that punches well above its size

The Decoder · Jul 23, 2026, 12:24 PM UTC

Poolside has released Laguna S 2.1, its third coding model in three months. Rather than rely on raw scale, the company trained it to keep checking its work, revise failed approaches, and avoid giving up too soon during long agentic sessions. The compact model beats several much larger rivals in benchmarks.…