For long chats, I suggest exporting any artifacts, asking Claude to summarize the chat and put the artifacts and summarization in a project. There's no need to stuff Claude's context windows, especially if you tend to ask a lot of explanation-type questions like I do.

I've also read some people get around rate limits using the API through OpenRouter, and I'm sure you could hook a document store around that easily, but the Claude UI is low-friction

Yeah, this is what I already do usually when it gives me the warning of it being a long chat, so initially it was an issue because I would get carried away but it is fine now. Thank you though!