Chat interface is linear, I never quite liked that for when I would have too many questions, I would end up asking questions in a numbered list and not really have independent branches of conversation.

On cli, the pi agent gives you this same functionality. On web, I made Fable make this.

BYOK Openrouter - all client side - you can check the network console!

https://github.com/srijanshukla18/tree-learn