Poolside releases Laguna S 2.1 open-weight coding model

Poolside released Laguna S 2.1, a 118-billion-parameter open-weight coding model with a mixture-of-experts architecture using eight billion active parameters per token. It runs on a single Nvidia DGX Spark desktop and scored over 70 percent on Terminal-Bench and nearly 60 percent on SWE-Bench Pro, matching larger rivals from DeepSeek, Nvidia, and Thinking Machines. The San Francisco startup positioned the release as a Western alternative to Chinese open-weight models.