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Poolside Releases Laguna S 2.1, an Open-Weight Agentic Coding Model Punching Above Its Weight Class on SWE-Bench Multilingual

118B parameters, 8B active. Poolside's Laguna S 2.1 just beat models 10x its size on coding benchmarks.

Illustration of independent geometric mechanisms passing paper tasks along branching amber tracks.
AI agents and the coordination of work.AI illustration by KeyNews
The KeyNews take

Why it matters

Open-weight coding models are rapidly closing the capability gap with massive closed models, threatening the economic moat of proprietary AI labs on developer workflows.

The key facts

6 to know
  1. Laguna S 2.1: 118B total parameters, 8B active per token (MoE architecture)

  2. 1M token context window

  3. Matches or beats larger models on SWE-Bench Multilingual (agentic coding)

  4. Runs on single NVIDIA DGX Spark

  5. Open-weight under OpenMDW-1.1 license

  6. Developed by Poolside

Go to the source

MarkTechPostmarktechpost.com

Publisher excerpt: Poolside has released Laguna S 2.1, a 118B open-weight Mixture-of-Experts coding model with 8B active parameters per token and a 1M-token context. It matches or beats models several times its size on agentic coding benchmarks, ships under OpenMDW-1.1, and runs on a single NVIDIA DGX Spark. The post…
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