All tools
20 free tools for detecting, rewriting and verifying text. Everything runs in the browser; the detector and humanizer share one account and one set of credits.
Detect AI text
Paste text and see, sentence by sentence, what reads as AI.
- AI DetectorSentence-level AI detection for ChatGPT, GPT-5, Claude and Gemini text.
- ChatGPT DetectorTuned for GPT-4o and GPT-5 output, with the same sentence map.
- AI Percentage CheckerHow much of a document is AI, as a percentage, with the flagged sections.
- Turnitin AI CheckerCheck work the way an institution would before you submit it.
- Spanish AI DetectorDetección de texto generado por IA en español.
- Accuracy BenchmarkHow this detector and nine others scored on the same test set.
Rewrite and write
Turn flagged text into your own voice, or draft from scratch.
- AI HumanizerRewrite AI text so it reads naturally, then re-check it in one click.
- AI to Human Text ConverterConvert stiff AI phrasing into plain human writing.
- ParaphraserRewrite text in eight styles while keeping the meaning.
- Grammar CheckerFix grammar, spelling and punctuation.
- SummarizerCondense long text into key points.
- Outline GeneratorStructure an essay or article before writing it.
- AI Blog WriterDraft a full post from a topic and outline.
Verify and clean
Catch invented sources and hidden characters before a reviewer does.
Integrations
Use the detector where you already work.
Comparing options? See how we stack up against GPTZero, Undetectable.ai and other alternatives, or read the blog.