A real rewrite with your own key, one payment for life.
Anthropic, OpenAI, Google or any OpenAI-compatible service, or Chrome's free built-in AI
Clarifying questions, live preview, versions
One-click refinements: shorter, more polite, more formal
5 free AI rewrites to try it
Where do my prompts go?
Nowhere you didn't choose. Kaidu has no server, no account and no tracking.
In local mode nothing leaves your browser. In AI mode your prompt goes straight from your browser to the provider you picked, with your key, or stays on your device with Chrome's built-in AI. Kaidu never sends a prompt that contains an API key or a card number.
The extension and its local mode are free. The lifetime license unlocks AI mode: no monthly fee, no account, and the price goes up as more people join, so early users pay the least.
No. Local mode is free and works without one. For AI rewriting you can use a key from Anthropic, OpenAI, Google or any OpenAI-compatible service (you pay that provider directly), or Chrome's free built-in AI where available.
How do I activate my license?
After purchase, Gumroad emails you a license key. Open Kaidu's settings, go to AI & keys, paste the key and click Activate.
Does Kaidu change my text without asking?
Only when you click the sparkle or use the shortcut. Every change can be undone in one click, and you can turn on a preview so nothing is replaced until you confirm.
What if I want a refund?
Contact meshiphantom@gmail.com. Refunds are handled through Gumroad, and a refunded license stops unlocking AI mode.
Your next prompt deserves the sparkle.
Install the free extension and try it on whatever you were about to ask.