Free AI detector with no daily limit, plus an AI humanizer, rewriter and grammar checker.
Coda One home page
Overview
What is Coda One?
Write like a human. Even when AI helped.
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.
Platforms and languages
Coda One Availability
Platforms
Languages
Capabilities
Coda One Key Features
AI Detector
Free with no daily limit and no signup. Highlights the specific sentences that read as machine-written.
AI Humanizer
5 free writing modes: Standard, Academic, Blog, Formal and Simple.
AI Rewriter and Grammar Checker
Rewrite in 5 free tones (Standard, Fluency, Formal, Casual, Concise) and check grammar, also in a Chrome extension.
Plans and access
Coda One Pricing
Freemium
The AI Detector is free with no daily limit and no signup. The writing tools are free for 3 runs a day without an account, or 5 with a free account.
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