AI Detector
Estimate whether text reads AI-generated: score out of 100, verdict, reasons, and tell-tale phrases. Free for authors.
Does your draft sound human?
AI writing tools are fast, but they leave fingerprints: generic openings, perfectly uniform sentences, and filler connectors. This detector reads your text like an editor and tells you where it sounds templated.
How to use it
Paste up to 9,000 characters and hit Detect AI text. You get a 0-100 score, a verdict, the reasoning, and the exact phrases pushing the score up — then rewrite those and check again.
Why use this AI Detector instead of asking ChatGPT or Claude?
Chatbots are great for ideas. This tool is for getting the job done — here's what changes when you use it instead of pasting your text into a chat app.
| Compared to a chatbot | This tool | ChatGPT / Claude |
|---|---|---|
| Speed | Instant. No prompt, no preamble, no waiting. | Type a prompt, wait for a long reply, read through it. |
| Privacy | Runs in your browser. Nothing gets uploaded or stored. | Your text is sent to and stored by a third party. |
| Format | Consistent, copy-ready output every single time. | Different style and structure every session. |
| Signup | None. Open the page and go. | Account required, limits and paid tiers involved. |
| Cost | Free. Unlimited with Tools Pro ($4.99/mo, all 18 tools). | Free tier with limits, or $20+/mo for full access. |
Use a chatbot to brainstorm. Use this tool to finish the job — then publish with Harmony when the book is ready.
Frequently asked questions
How accurate is this detector?
It's an honest estimate, not a guarantee. It scores text on the patterns AI writers repeat — generic openers, uniform rhythm, templated connectors — and explains its reasoning so you can judge for yourself.
Why does it matter if my text sounds AI-generated?
Readers and search engines both prefer human-feeling writing. If your score is high, the AI Detector shows the exact phrases to rewrite.
How do I make my text score lower?
Add specific numbers, named people, first-hand details, and vary sentence length. The tell-tale phrases list shows exactly what to cut.
Want human-polished prose?
Harmony Publishing's editing team tightens every page of your manuscript — you keep 100% of royalties.
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