# IPEX-LLM Key Features

You may run the LLMs using `ipex-llm` through one of the following APIs:

* [PyTorch API](./optimize_model.md)
* [`transformers`-style API](./transformers_style_api.md)
  * [Hugging Face `transformers` Format](./hugging_face_format.md)
  * [Native Format](./native_format.md)
* [LangChain API](./langchain_api.md)
* [GPU Supports](./gpu_supports.md)
  * [Inference on GPU](./inference_on_gpu.md)
  * [Finetune (QLoRA)](./finetune.md)
  * [Multi GPUs selection](./multi_gpus_selection.md)