Coda One

Coda One is a small set of AI writing tools built around one loop: check a draft, then fix what the check finds. The AI Detector is free with no daily limit and no signup, and it marks the specific sentences that read as machine-written. Alongside it are an AI Humanizer with 5 free writing modes, an AI Rewriter with 5 free tones, and a Grammar Checker, in the browser and in a Chrome extension. The writing tools are free for 3 runs a day without an account, or 5 with a free account.