Why do you want to download it? (Just curiosity) Actually, it has an HTML interface, so you need a web server to start. 😅 I'm planning to build versions for Android and PC, but I have so much to do, so I can't say when.
The time she takes to answer depends on the LLM and the number of concurrent users. By downloading it, you will have the same response times. The only way to have faster response times is to use your own API key and pay for your usage. Are you interested? The bot uses Mistral AI, not ChatGPT.