Describe the solution you'd like
Chat history is great, though there are some instances where it would be nice to be able to temporarily disable the chats going into the history, for example if one is playing around with different, repeated prompts. It would be great to have a toggle that could put the UI into "incognito" or "off the record" mode where the chats wouldn't go to the history.

Describe alternatives you've considered
There are a couple of ways of handling this now. It's possible to delete the chat history one by one, or create a second user profile (and delete it when done) but the toggle would be easier.