kapynOpen Source

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

Laguna S 2.1 is an open-weight coding model designed for autonomous software development. Poolside trains the compact model to continuously self-correct, revise failed approaches, and sustain performance during long agentic sessions. It outperforms much larger rivals on standard benchmarks and solves complex mathematical problems efficiently.

The Decoder·Jul 23, 2026

Opening Kapyn…