Model family
Laguna
Family overview — summarizes releases; licenses and availability belong to each release.
Laguna is Poolside's family of mixture-of-experts language models for agentic coding. Poolside's release notes and announcements list Laguna XS.2 and Laguna M.1 (April 2026), Laguna XS 2.1 (announced 2 July 2026), and Laguna S 2.1 (21 July 2026), with sizes from 33B total (3B active) to 225B total (23B active) parameters.1234
- Model hub: Poolside on Hugging Face (external site: huggingface.co)
- Release notes: Model release notes (external site: docs.poolside.ai)
- Paper: Laguna M.1/XS.2 technical report (external site: poolside.ai)
Last reviewedEntry updated Documented release
Releases assessed
Each release is assessed on its own. This family has no family-wide openness label.
| Release | Weights | Tier (USASI rubric v0.1) | License | Released |
|---|---|---|---|---|
| Laguna S 2.1 | Weights: Public | Model-disclosure tier (USASI rubric v0.1): Open-weight | OpenMDW License Agreement, version 1.1 | Jul 21, 2026 |
| Laguna XS 2.1 | Weights: Public | Model-disclosure tier (USASI rubric v0.1): Open-weight | OpenMDW License Agreement, version 1.1 | Jul 2, 2026 |
What it is useful for
Poolside documents the models for multi-step coding work that uses tools and checks, such as exploring a codebase, editing files, running tests, and fixing failures, mainly through its agent CLI or an OpenAI-compatible API.1
Organization context
U.S. eligibility
Project eligibility rests on documented governing or maintaining entities, not on contributors.
Sources
This listing is not an endorsement, a safety assessment, or a federal approval.