Laguna XS 2.1

#16 in Reasoning Models

Poolside · v2.1 · 2× · last seen Jul 19, 2026

29

Momentum

Laguna XS 2.1 is a Reasoning/Coding model developed by poolside with 33 billion total parameters and a Mixture-of-Experts architecture with 3 billion activated parameters per Token. It is a revised version of Laguna XS.2 and was specifically designed for agentic coding and long-running tasks on local hardware. The model shows particular improvements over its predecessor on SWE-bench Multilingual (63.1%) and supports a context window of 256K Token as well as Tool-Calling and Reasoning. It is distributed under the open OpenMDW-1.1 license and is available via Hugging Face, OpenRouter, and the poolside API, among others.

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