Release

Poolside releases Laguna S 2.1, a 118B-parameter open-weight model with a 1M-token context

Event: Jul 21, 2026 · Published: Oct 13, 2026

Poolside introduced Laguna S 2.1 on July 21, 2026, a Mixture-of-Experts model with 118B total parameters and 8B activated per token that the model card says is designed for agentic coding and long-horizon work. Poolside describes it as a scale-up of the Laguna XS family, and the model card lists a 1,048,576-token context window. The weights are on Hugging Face under the OpenMDW-1.1 license, with FP8, NVFP4, INT4, and GGUF variants and a DFlash draft model for speculative decoding. USASI has not tested this model.1 2

Sources

1.
Introducing Laguna S 2.1 (external site: poolside.ai)
Poolside · Announcement · published Jul 21, 2026 · accessed Oct 13, 2026
2.
poolside/Laguna-S-2.1 model card (external site: huggingface.co)
Poolside (Hugging Face) · Model card · accessed Oct 13, 2026

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USASI. (2026, October 13). Poolside releases Laguna S 2.1, a 118B-parameter open-weight model with a 1M-token context. United States of America Superintelligence. https://unitedstatesofamericasuperintelligence.com/news/poolside-releases-laguna-s-2-1/

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@misc{usasi_news_poolside_releases_laguna_s_2_1,
  author = {{USASI}},
  title = {Poolside releases Laguna S 2.1, a 118B-parameter open-weight model with a 1M-token context},
  year = {2026},
  month = oct,
  howpublished = {\url{https://unitedstatesofamericasuperintelligence.com/news/poolside-releases-laguna-s-2-1/}},
  note = {United States of America Superintelligence. Last updated 2026-10-13}
}

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