Feature Request: Native Support for Multi-Branch / Tree-Structured Chat

[xavi-ortega]

Hi! I’d love TanStack AI to support multi-branch (tree-structured) chat, similar to ChatGPT.

What this means?

• Regenerating a message creates a sibling version (not overwriting the original)
• Continuing the conversation follows the currently selected branch (with the relevant message history)
• Users can switch branches at any point

Example

U1
└─ A1              # first assistant response
   ├─ U2 → A2      # original branch continues
   │
   └─ A1'          # regeneration of A1 (branch 2)
       └─ U2' → A2'  # user follow-up on regenerated response

This would make TanStack AI ideal for apps offering ChatGPT-style branching and message versioning.