ggml: add Q1_0 1-bit quantization support (CPU) - 1-bit Bonsai models

Reddit r/LocalLLaMA / 4/7/2026

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Key Points

  • ggml has added support for Q1_0 1-bit quantization on CPU, enabling more memory-efficient model inference.
  • The change is aimed at running very small “1-bit Bonsai” style models effectively without requiring a GPU.
  • The post highlights that Bonsai’s 8B model is about 1.15GB, suggesting CPU-only deployment is feasible with the new quantization.
  • A linked pull request in the llama.cpp/ggml ecosystem documents the implementation details.
ggml: add Q1_0 1-bit quantization support (CPU) - 1-bit Bonsai models

Bonsai's 8B model is just 1.15GB so CPU alone is more than enough.

https://huggingface.co/collections/prism-ml/bonsai

submitted by /u/pmttyji
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