
If you ever compare ChatGPT vs Claude vs Gemini on the same prompt, this saves a lot of tab-switching: https://prompt-router.pages.dev/
You write the prompt once, click the AI you want, and it opens pre-filled. Free, no login, nothing stored.
Also has a dev prompt library (debugging, code review, testing, etc.) if that's useful — https://prompt-router.pages.dev/dev