I often want to send the same prompt to Claude Code and Codex, then compare what they come up with.

Building on my project switcher, I’ve made a c2 utility. Here’s the flow:

1. Type c2
2. Enter prompt.
3. Select project folder using project switcher.
4. Codex opens in the current pane, and Claude opens in a new pane, both running the prompt.

As a one-liner, I can do c2 <project_id> <prompt> to skip steps (2) and (3).

The script is made for Warp, but you can adapt it to your favourite terminal.