# LLM Judge | [Paper](https://arxiv.org/abs/2306.05685) | [Leaderboard](https://huggingface.co/spaces/lmsys/chatbot-arena-leaderboard) | In this package, you can use MT-bench questions and prompts to evaluate your models with LLM-as-a-judge. MT-bench is a set of challenging multi-turn open-ended questions for evaluating chat assistants. To automate the evaluation process, we prompt strong LLMs like GPT-4 to act as judges and assess the quality of the models' responses. ## Contents - [Install](#install) - [Review Pre-Generated Model Answers and Judgments](#review-pre-generated-model-answers-and-judgments) - [MT-Bench](#mt-bench) - [Agreement Computation](#agreement-computation) - [Datasets](#datasets) - [Citation](#citation) ## Install ``` git clone https://github.com/lm-sys/FastChat.git cd FastChat pip install -e ".[model_worker,llm_judge]" ``` ## Review Pre-Generated Model Answers and Judgments We provide pre-generated model answers and judgments for some models. You can view them at this [demo](https://huggingface.co/spaces/lmsys/mt-bench). To download the pre-generated data, use ``` python3 download_mt_bench_pregenerated.py ``` After downloading the data, you can view them locally by ``` python3 qa_browser.py --share ``` You can use this QA browser to view the answers generated by you later. ## MT-Bench ### Evaluate a model on MT-bench #### Step 1. Generate model answers to MT-bench questions ``` python gen_model_answer.py --model-path [MODEL-PATH] --model-id [MODEL-ID] ``` Arguments: - `[MODEL-PATH]` is the path to the weights, which can be a local folder or a Hugging Face repo ID. - `[MODEL-ID]` is a name you give to the model. e.g., ``` python gen_model_answer.py --model-path lmsys/vicuna-7b-v1.5 --model-id vicuna-7b-v1.5 ``` The answers will be saved to `data/mt_bench/model_answer/[MODEL-ID].jsonl`. To make sure FastChat loads the correct prompt template, see the supported models and how to add a new model [here](../../docs/model_support.md#how-to-support-a-new-model). You can also specify `--num-gpus-per-model` for model parallelism (needed for large 65B models) and `--num-gpus-total` to parallelize answer generation with multiple GPUs. > Note: if you experience slow answer generation, please refer to [Other Backends](#other-backends) section to use inference engine to speed up by 20x. #### Step 2. Generate GPT-4 judgments There are several options to use GPT-4 as a judge, such as pairwise winrate and single-answer grading. In MT-bench, we recommend single-answer grading as the default mode. This mode asks GPT-4 to grade and give a score to model's answer directly without pairwise comparison. For each turn, GPT-4 will give a score on a scale of 10. We then compute the average score on all turns. ``` export OPENAI_API_KEY=XXXXXX # set the OpenAI API key python gen_judgment.py --model-list [LIST-OF-MODEL-ID] --parallel [num-concurrent-api-call] ``` e.g., ``` python gen_judgment.py --model-list vicuna-13b-v1.3 alpaca-13b llama-13b claude-v1 gpt-3.5-turbo gpt-4 --parallel 2 ``` The judgments will be saved to `data/mt_bench/model_judgment/gpt-4_single.jsonl` #### Step 3. Show MT-bench scores - Show the scores for selected models ``` python show_result.py --model-list vicuna-13b-v1.3 alpaca-13b llama-13b claude-v1 gpt-3.5-turbo gpt-4 ``` - Show all scores ``` python show_result.py ``` --- ### Other grading options Besides score-based single-answer grading, we also support two additional grading options based on win rates: - `pariwise-baseline`: run pairwise comparison against a baseline model. - `pairwise-all`: run pairwise comparison between all model pairs on all questions. #### Option 2: pairwise comparison against a baseline (default: gpt-3.5-turbo) - Generate GPT-4 judgments ``` python gen_judgment.py --mode pairwise-baseline --model-list vicuna-13b-v1.3 alpaca-13b llama-13b --parallel 2 ``` The judgments will be saved to `data/mt_bench/model_judgment/gpt-4_pair.jsonl` - Show results ``` python show_result.py --mode pairwise-baseline ``` #### Option 3: Run GPT-4 judge with all pair comparisons Another option is to run pairwise comparisons on all possible pairs. This could be more expensive when #models increases, but it gives you a more comprehensive information. ``` python gen_judgment.py --mode pairwise-all --model-list [LIST-OF-MODEL-ID] --parallel [num-concurrent-api-call] ``` ``` python show_result.py --mode pairwise-all ``` ### How to get GPT-3.5/GPT-4/Claude's answer? - `python gen_api_answer.py --model [MODEL-NAME]` to generate GPT-3.5/4 and Claude's answers. ### How to plot the radar figure? You can use this [colab notebook](https://colab.research.google.com/drive/15O3Y8Rxq37PuMlArE291P4OC6ia37PQK#scrollTo=5i8R0l-XqkgO) to plot the radar figure for MT-bench. ### Other backends We can also use vLLM for answer generation, which can be faster for the models supported by vLLM. 1. Launch a vLLM worker ``` vllm serve [MODEL-PATH] --dtype auto ``` - Arguments: - `[MODEL-PATH]` is the path to the weights, which can be a local folder or a Hugging Face repo ID. 2. Generate the answers ``` python gen_api_answer.py --model [MODEL-NAME] --openai-api-base http://localhost:8000/v1 --parallel 50 ``` - Arguments: - `[MODEL-NAME]` is the name of the model from Step 1. - `--parallel` is the number of concurrent API calls to the vLLM worker. ## Agreement Computation We released 3.3K human annotations for model responses generated by 6 models in response to 80 MT-bench questions. The dataset is available at [lmsys/mt_bench_human_judgments](https://huggingface.co/datasets/lmsys/mt_bench_human_judgments). This Colab [notebook](https://colab.research.google.com/drive/1ctgygDRJhVGUJTQy8-bRZCl1WNcT8De6?usp=sharing) shows how to compute the agreement between humans and GPT-4 judge with the dataset. Our results show that humans and GPT-4 judge achieve over 80\% agreement, the same level of agreement between humans. ## Datasets - [Chatbot Arena Conversation Dataset](https://huggingface.co/datasets/lmsys/chatbot_arena_conversations) - [MT-bench Human Annotation Dataset](https://huggingface.co/datasets/lmsys/mt_bench_human_judgments) ## Citation Please cite the following paper if you find the code or datasets helpful. ``` @misc{zheng2023judging, title={Judging LLM-as-a-judge with MT-Bench and Chatbot Arena}, author={Lianmin Zheng and Wei-Lin Chiang and Ying Sheng and Siyuan Zhuang and Zhanghao Wu and Yonghao Zhuang and Zi Lin and Zhuohan Li and Dacheng Li and Eric. P Xing and Hao Zhang and Joseph E. Gonzalez and Ion Stoica}, year={2023}, eprint={2306.05685}, archivePrefix={arXiv}, primaryClass={cs.CL} } ```