I use Codex, Claude Code and Gemini CLI on the same projects. When one of them hits its usage limit halfway through a feature, the next AI starts cold and re-reads the whole project.

So I made which-ai-to-use: it hands your task to another AI with the full context, so it carries on instead of starting over.

Try it: search "which-ai-to-use" in VS Code Extensions, or run npx which-ai-to-use in any project.

What it does

• Hands your task to another AI: writes a handoff note with the task, your latest requests, where the AI stopped, the changes and your test command, so Codex, Gemini CLI or any other AI carries on.

• Reads the chat for you: from Claude Code, Codex or Gemini CLI, so you don't retype anything.

• Keeps your secrets out: API keys and passwords from the chat are hidden.

• Picks who carries on: the best AI you have installed, started with the note.

• Gives the task back to Claude when its limit resets.

• Tells you which AI to use: for any task, the best of your tools and the right model.

• Helps you hit the limit less: a warning before your 5-hour window runs out, and your AI skips files that waste tokens.

• Shows your AI week: tokens per day next to the week before.

How to use it

• VS Code, Cursor or Windsurf: open the Which AI sidebar and click "Claude limit over?"

• Terminal: run npx which-ai-to-use handoff in your project

• Automatically: the optional Claude Code plugin writes the note when the limit is reached

Get it

• VS Code: search "which-ai-to-use" in Extensions

• Cursor / Windsurf: the same search (Open VSX)

• Terminal: npx which-ai-to-use

Free and open source (MIT). Runs on your laptop.