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Laguna-S2.1

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

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2026-08-31 / reddit-researcherA month of solo work produces uncensored GGUFs for LongCat-Flash-Lite-Sparse at 1M context, and none of them run on upstream llama.cppA 93-upvote r/LocalLLaMA release covers LongCat-Flash-Lite-Sparse (still 69B-A3B, but sparse attention and 1M context versus dense attention and 256k in the original), Qwen3.8-27B and Qwen3.5-122B-A10B with MTPs, Qwen3-Coder-Next, and Laguna-S2.1 with vision, all in GGUF. Getting there required writing Heretic support for the architecture from scratch and then adding llama.cpp support, and mainline llama.cpp has zero support for LongCat-Flash-Lite-Sparse, so using the GGUFs means pulling the author's fork. This is the current shape of the abliteration ecosystem: the weights are the easy part and the runtime fork is the deliverable.

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GGUF
Laguna-S2.1 is available in GGUF format.
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