Poolside Open-Sources Laguna XS.2 and M.1: First Open-Weight Agentic Coding Models from a US Startup

Poolside

Models / LLM official + media 2 src. ~1 min

Poolside released Laguna XS.2 (33B total / 3B active, Apache 2.0, 68.2% SWE-bench Verified, runs on a 36GB Mac via Ollama) and Laguna M.1 (225B / 23B active MoE, 72.5% SWE-bench Verified) on April 28. Two companion products in preview: pool (terminal coding agent) and Shimmer (cloud dev environment). Models available on HuggingFace and OpenRouter.

Why it matters

Poolside's first open-weight coding models bring a well-funded US lab directly into the open agentic coding space, competing with Devstral and Qwen-Coder. The compact XS.2 that runs locally on a Mac with 36GB RAM lowers the barrier for individual developers who want frontier coding performance without cloud costs.

Importance: 3/5

First open-weight models from a well-capitalized US coding AI startup, competitive on SWE-bench with an accessible runnable variant.

open-weights coding coding-agent swe-bench release us apache2

Sources

official Introducing Laguna XS.2 and Laguna M.1 — Poolside

media American AI startup Poolside launches open model Laguna XS.2 — VentureBeat