Coda One
Free AI detector with no daily limit, plus an AI humanizer, rewriter and grammar checker. Start free in your browser — no signup.
Overview
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 instead of just giving a score.
Alongside the detector are an AI Humanizer with 5 free writing modes (Standard, Academic, Blog, Formal, Simple), an AI Rewriter with 5 free tones (Standard, Fluency, Formal, Casual, Concise), and a Grammar Checker. All four are available 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. Built by a small independent team in London.
What it offers
Features
- AI Detector that highlights the sentences that read as machine-written
- AI Humanizer with 5 free writing modes
- AI Rewriter with 5 free tones, Grammar Checker and Chrome extension
Use cases
- Check a draft for AI tells before you publish or submit it
- Rewrite flagged sentences in a different tone
- Proofread grammar in the browser or the Chrome extension
Screenshots
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