Laguna XS 2.1

Laguna XS 2.1 is Poolside's open-weight Mixture-of-Experts coding model with 33B total parameters and 3B activated per token (256 experts + 1 shared; 40 layers). It targets agentic coding and long-horizon local work, with interleaved thinking, a 262,144-token context window, and text-to-text only modalities. Available as open weights on Hugging Face and via Poolside's API and OpenRouter (poolside/laguna-xs-2.1). It is served by poolside with a 256K-token context window at $0.1 / $0.2 per 1M input/output tokens.