Free AI Detector & AI Checker

Paste the text above and run Detect AI. You get a real detector score, the sentences most likely to be AI-generated, and why each one was flagged.

The score comes from a real detector, and it is still an estimate. No detector on the market is reliable enough to accuse someone on, including the paid ones, false positives on non-native English writing are a documented, ongoing problem across the whole category.

It looks for the statistical shape that language models produce in general, flat rhythm, high word predictability, stock connective phrases, rather than fingerprints of one vendor. That holds up better across models than a model-specific classifier.

Please do not use it as evidence. Use it as a conversation starter. The heatmap is genuinely useful for showing a writer which sentences read as mechanical; it is not fit to support an academic-misconduct finding, and neither is anything else currently sold as one.

Scanning is unlimited with or without an account. Only the rewrite pass is capped, because that is the part people build workflows on.

Yes, substantially. Under about 100 words any detector is close to guessing, including this one.

Both names describe the same thing: a tool that estimates whether text was machine-written. This one checks ChatGPT, Claude, Gemini and other model output and shows the result sentence by sentence.

The writing analysis and your Style DNA run in your browser. For a real AI score, the text you check is sent to an AI-detection provider, and we never store it. When you rewrite on a paid plan, the draft is sent to our server, rewritten and sent back without being stored. AI features (rewriting, humanizing and Copilot) send the text to Cloudflare Workers AI, which processes it and doesn't keep it.