Vicuna is an open-source chatbot trained on user-shared conversations from ShareGPT, and it can be run locally on your machine using CPU or GPU. It achieves over 90% quality compared to OpenAI ChatGPT and Google Bard, and outperforms other models like LLaMA and Stanford Alpaca in most cases. The training and serving code, along with an online demo, are publicly available for non-commercial use. You can find the online demo here: https://chat.lmsys.org/. To install Vicuna on your machine, you should follow the installation steps on the GitHub repository.