💫 Intel® LLM Library for PyTorch*

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IPEX-LLM is an LLM acceleration library for Intel GPU (e.g., local PC with iGPU, discrete GPU such as Arc, Flex and Max), NPU and CPU ¹.

Note

• IPEX-LLM provides seamless integration with llama.cpp, Ollama, vLLM, HuggingFace transformers, LangChain, LlamaIndex, Text-Generation-WebUI, DeepSpeed-AutoTP, FastChat, Axolotl, HuggingFace PEFT, HuggingFace TRL, AutoGen, ModeScope, etc.
• 70+ models have been optimized/verified on ipex-llm (e.g., Llama, Phi, Mistral, Mixtral, DeepSeek, Qwen, ChatGLM, MiniCPM, Qwen-VL, MiniCPM-V and more), with state-of-art LLM optimizations, XPU acceleration and low-bit (FP8/FP6/FP4/INT4) support; see the complete list here.

Latest Update 🔥

• [2025/05] You can now run DeepSeek V3/R1 671B and Qwen3MoE 235B models with just 1 or 2 Intel Arc GPU (such as A770 or B580) using FlashMoE in ipex-llm.
• [2025/04] We released ipex-llm 2.2.0, which includes Ollama Portable Zip and llama.cpp Portable Zip.

  ⚠️ Warning (for llama.cpp Portable Zip)
  mmap-based model loading in llama.cpp may leak data via side-channels in multi-tenant or shared-host environments.
  To disable mmap, add:

  --no-mmap

• [2025/04] We added support of PyTorch 2.6 for Intel GPU.
• [2025/03] We added support for Gemma3 model in the latest llama.cpp Portable Zip.
• [2025/03] We can now run DeepSeek-R1-671B-Q4_K_M with 1 or 2 Arc A770 on Xeon using the latest llama.cpp Portable Zip.
• [2025/02] We added support of llama.cpp Portable Zip for Intel GPU (both Windows and Linux) and NPU (Windows only).
• [2025/02] We added support of Ollama Portable Zip to directly run Ollama on Intel GPU for both Windows and Linux (without the need of manual installations).
• [2025/02] We added support for running vLLM 0.6.6 on Intel Arc GPUs.
• [2025/01] We added the guide for running ipex-llm on Intel Arc B580 GPU.
• [2025/01] We added support for running Ollama 0.5.4 on Intel GPU.
• [2024/12] We added both Python and C++ support for Intel Core Ultra NPU (including 100H, 200V, 200K and 200H series).

More updates

• [2024/11] We added support for running vLLM 0.6.2 on Intel Arc GPUs.
• [2024/07] We added support for running Microsoft's GraphRAG using local LLM on Intel GPU; see the quickstart guide here.
• [2024/07] We added extensive support for Large Multimodal Models, including StableDiffusion, Phi-3-Vision, Qwen-VL, and more.
• [2024/07] We added FP6 support on Intel GPU.
• [2024/06] We added experimental NPU support for Intel Core Ultra processors; see the examples here.
• [2024/06] We added extensive support of pipeline parallel inference, which makes it easy to run large-sized LLM using 2 or more Intel GPUs (such as Arc).
• [2024/06] We added support for running RAGFlow with ipex-llm on Intel GPU.
• [2024/05] ipex-llm now supports Axolotl for LLM finetuning on Intel GPU; see the quickstart here.
• [2024/05] You can now easily run ipex-llm inference, serving and finetuning using the Docker images.
• [2024/05] You can now install ipex-llm on Windows using just "one command".
• [2024/04] You can now run Open WebUI on Intel GPU using ipex-llm; see the quickstart here.
• [2024/04] You can now run Llama 3 on Intel GPU using llama.cpp and ollama with ipex-llm; see the quickstart here.
• [2024/04] ipex-llm now supports Llama 3 on both Intel GPU and CPU.
• [2024/04] ipex-llm now provides C++ interface, which can be used as an accelerated backend for running llama.cpp and ollama on Intel GPU.
• [2024/03] bigdl-llm has now become ipex-llm (see the migration guide here); you may find the original BigDL project here.
• [2024/02] ipex-llm now supports directly loading model from ModelScope (魔搭).
• [2024/02] ipex-llm added initial INT2 support (based on llama.cpp IQ2 mechanism), which makes it possible to run large-sized LLM (e.g., Mixtral-8x7B) on Intel GPU with 16GB VRAM.
• [2024/02] Users can now use ipex-llm through Text-Generation-WebUI GUI.
• [2024/02] ipex-llm now supports Self-Speculative Decoding, which in practice brings ~30% speedup for FP16 and BF16 inference latency on Intel GPU and CPU respectively.
• [2024/02] ipex-llm now supports a comprehensive list of LLM finetuning on Intel GPU (including LoRA, QLoRA, DPO, QA-LoRA and ReLoRA).
• [2024/01] Using ipex-llm QLoRA, we managed to finetune LLaMA2-7B in 21 minutes and LLaMA2-70B in 3.14 hours on 8 Intel Max 1550 GPU for Standford-Alpaca (see the blog here).
• [2023/12] ipex-llm now supports ReLoRA (see "ReLoRA: High-Rank Training Through Low-Rank Updates").
• [2023/12] ipex-llm now supports Mixtral-8x7B on both Intel GPU and CPU.
• [2023/12] ipex-llm now supports QA-LoRA (see "QA-LoRA: Quantization-Aware Low-Rank Adaptation of Large Language Models").
• [2023/12] ipex-llm now supports FP8 and FP4 inference on Intel GPU.
• [2023/11] Initial support for directly loading GGUF, AWQ and GPTQ models into ipex-llm is available.
• [2023/11] ipex-llm now supports vLLM continuous batching on both Intel GPU and CPU.
• [2023/10] ipex-llm now supports QLoRA finetuning on both Intel GPU and CPU.
• [2023/10] ipex-llm now supports FastChat serving on on both Intel CPU and GPU.
• [2023/09] ipex-llm now supports Intel GPU (including iGPU, Arc, Flex and MAX).
• [2023/09] ipex-llm tutorial is released.

ipex-llm Demo

See demos of running local LLMs on Intel Core Ultra iGPU, Intel Core Ultra NPU, single-card Arc GPU, or multi-card Arc GPUs using ipex-llm below.

Intel Core Ultra iGPU	Intel Core Ultra NPU	2-Card Intel Arc dGPUs	Intel Xeon + Arc dGPU
Ollama (Mistral-7B, Q4_K)	HuggingFace (Llama3.2-3B, SYM_INT4)	llama.cpp (DeepSeek-R1-Distill-Qwen-32B, Q4_K)	FlashMoE (Qwen3MoE-235B, Q4_K)

ipex-llm Performance

See the Token Generation Speed on Intel Core Ultra and Intel Arc GPU below¹ (and refer to [2][3][4] for more details).

You may follow the Benchmarking Guide to run ipex-llm performance benchmark yourself.

Model Accuracy

Please see the Perplexity result below (tested on Wikitext dataset using the script here).

Perplexity	sym_int4	q4_k	fp6	fp8_e5m2	fp8_e4m3	fp16
Llama-2-7B-chat-hf	6.364	6.218	6.092	6.180	6.098	6.096
Mistral-7B-Instruct-v0.2	5.365	5.320	5.270	5.273	5.246	5.244
Baichuan2-7B-chat	6.734	6.727	6.527	6.539	6.488	6.508
Qwen1.5-7B-chat	8.865	8.816	8.557	8.846	8.530	8.607
Llama-3.1-8B-Instruct	6.705	6.566	6.338	6.383	6.325	6.267
gemma-2-9b-it	7.541	7.412	7.269	7.380	7.268	7.270
Baichuan2-13B-Chat	6.313	6.160	6.070	6.145	6.086	6.031
Llama-2-13b-chat-hf	5.449	5.422	5.341	5.384	5.332	5.329
Qwen1.5-14B-Chat	7.529	7.520	7.367	7.504	7.297	7.334

ipex-llm Quickstart

Use

• Ollama: running Ollama on Intel GPU without the need of manual installations
• llama.cpp: running llama.cpp on Intel GPU without the need of manual installations
• Arc B580: running ipex-llm on Intel Arc B580 GPU for Ollama, llama.cpp, PyTorch, HuggingFace, etc.
• NPU: running ipex-llm on Intel NPU in both Python/C++ or llama.cpp API.
• PyTorch/HuggingFace: running PyTorch, HuggingFace, LangChain, LlamaIndex, etc. (using Python interface of ipex-llm) on Intel GPU for Windows and Linux
• vLLM: running ipex-llm in vLLM on both Intel GPU and CPU
• FastChat: running ipex-llm in FastChat serving on on both Intel GPU and CPU
• Serving on multiple Intel GPUs: running ipex-llm serving on multiple Intel GPUs by leveraging DeepSpeed AutoTP and FastAPI
• Text-Generation-WebUI: running ipex-llm in oobabooga WebUI
• Axolotl: running ipex-llm in Axolotl for LLM finetuning
• Benchmarking: running (latency and throughput) benchmarks for ipex-llm on Intel CPU and GPU

Docker

• GPU Inference in C++: running llama.cpp, ollama, etc., with ipex-llm on Intel GPU
• GPU Inference in Python : running HuggingFace transformers, LangChain, LlamaIndex, ModelScope, etc. with ipex-llm on Intel GPU
• vLLM on GPU: running vLLM serving with ipex-llm on Intel GPU
• vLLM on CPU: running vLLM serving with ipex-llm on Intel CPU
• FastChat on GPU: running FastChat serving with ipex-llm on Intel GPU
• VSCode on GPU: running and developing ipex-llm applications in Python using VSCode on Intel GPU

Applications

• GraphRAG: running Microsoft's GraphRAG using local LLM with ipex-llm
• RAGFlow: running RAGFlow (an open-source RAG engine) with ipex-llm
• LangChain-Chatchat: running LangChain-Chatchat (Knowledge Base QA using RAG pipeline) with ipex-llm
• Coding copilot: running Continue (coding copilot in VSCode) with ipex-llm
• Open WebUI: running Open WebUI with ipex-llm
• PrivateGPT: running PrivateGPT to interact with documents with ipex-llm
• Dify platform: running ipex-llm in Dify(production-ready LLM app development platform)

Install

• Windows GPU: installing ipex-llm on Windows with Intel GPU
• Linux GPU: installing ipex-llm on Linux with Intel GPU
• For more details, please refer to the full installation guide

Code Examples

• Low bit inference

  • INT4 inference: INT4 LLM inference on Intel GPU and CPU
  • FP8/FP6/FP4 inference: FP8, FP6 and FP4 LLM inference on Intel GPU
  • INT8 inference: INT8 LLM inference on Intel GPU and CPU
  • INT2 inference: INT2 LLM inference (based on llama.cpp IQ2 mechanism) on Intel GPU

• FP16/BF16 inference

  • FP16 LLM inference on Intel GPU, with possible self-speculative decoding optimization
  • BF16 LLM inference on Intel CPU, with possible self-speculative decoding optimization

• Distributed inference

  • Pipeline Parallel inference on Intel GPU
  • DeepSpeed AutoTP inference on Intel GPU

• Save and load

  • Low-bit models: saving and loading ipex-llm low-bit models (INT4/FP4/FP6/INT8/FP8/FP16/etc.)
  • GGUF: directly loading GGUF models into ipex-llm
  • AWQ: directly loading AWQ models into ipex-llm
  • GPTQ: directly loading GPTQ models into ipex-llm

• Finetuning

  • LLM finetuning on Intel GPU, including LoRA, QLoRA, DPO, QA-LoRA and ReLoRA
  • QLoRA finetuning on Intel CPU

• Integration with community libraries

  • HuggingFace transformers
  • Standard PyTorch model
  • LangChain
  • LlamaIndex
  • DeepSpeed-AutoTP
  • Axolotl
  • HuggingFace PEFT
  • HuggingFace TRL
  • AutoGen
  • ModeScope
• Tutorials

API Doc

• HuggingFace Transformers-style API (Auto Classes)
• API for arbitrary PyTorch Model

FAQ

• FAQ & Trouble Shooting

Verified Models

Over 70 models have been optimized/verified on ipex-llm, including LLaMA/LLaMA2, Mistral, Mixtral, Gemma, LLaVA, Whisper, ChatGLM2/ChatGLM3, Baichuan/Baichuan2, Qwen/Qwen-1.5, InternLM and more; see the list below.

Model	CPU Example	GPU Example	NPU Example
LLaMA	link1, link2	link
LLaMA 2	link1, link2	link	Python link, C++ link
LLaMA 3	link	link	Python link, C++ link
LLaMA 3.1	link	link
LLaMA 3.2		link	Python link, C++ link
LLaMA 3.2-Vision		link
ChatGLM	link
ChatGLM2	link	link
ChatGLM3	link	link
GLM-4	link	link
GLM-4V	link	link
GLM-Edge		link	Python link
GLM-Edge-V		link
Mistral	link	link
Mixtral	link	link
Falcon	link	link
MPT	link	link
Dolly-v1	link	link
Dolly-v2	link	link
Replit Code	link	link
RedPajama	link1, link2
Phoenix	link1, link2
StarCoder	link1, link2	link
Baichuan	link	link
Baichuan2	link	link	Python link
InternLM	link	link
InternVL2		link
Qwen	link	link
Qwen1.5	link	link
Qwen2	link	link	Python link, C++ link
Qwen2.5		link	Python link, C++ link
Qwen-VL	link	link
Qwen2-VL		link
Qwen2-Audio		link
Aquila	link	link
Aquila2	link	link
MOSS	link
Whisper	link	link
Phi-1_5	link	link
Flan-t5	link	link
LLaVA	link	link
CodeLlama	link	link
Skywork	link
InternLM-XComposer	link
WizardCoder-Python	link
CodeShell	link
Fuyu	link
Distil-Whisper	link	link
Yi	link	link
BlueLM	link	link
Mamba	link	link
SOLAR	link	link
Phixtral	link	link
InternLM2	link	link
RWKV4		link
RWKV5		link
Bark	link	link
SpeechT5		link
DeepSeek-MoE	link
Ziya-Coding-34B-v1.0	link
Phi-2	link	link
Phi-3	link	link
Phi-3-vision	link	link
Yuan2	link	link
Gemma	link	link
Gemma2		link
DeciLM-7B	link	link
Deepseek	link	link
StableLM	link	link
CodeGemma	link	link
Command-R/cohere	link	link
CodeGeeX2	link	link
MiniCPM	link	link	Python link, C++ link
MiniCPM3		link
MiniCPM-V		link
MiniCPM-V-2	link	link
MiniCPM-Llama3-V-2_5		link	Python link
MiniCPM-V-2_6	link	link	Python link
MiniCPM-o-2_6		link
Janus-Pro		link
Moonlight		link
StableDiffusion		link
Bce-Embedding-Base-V1			Python link
Speech_Paraformer-Large			Python link

Get Support

• Please report a bug or raise a feature request by opening a Github Issue
• Please report a vulnerability by opening a draft GitHub Security Advisory

Footnotes

1. Performance varies by use, configuration and other factors. ipex-llm may not optimize to the same degree for non-Intel products. Learn more at www.Intel.com/PerformanceIndex. ↩ ↩²