AI Writing Detector & ChatGPT Detector
Free ChatGPT detector and AI writing detector — paste text, get an honest three-signal score.
Quick verdict
- Best for
- Teachers spot-checking essays
- Pricing
- Free
- Not ideal if
- Limited to 500 words per submission
- Editor rating
- 4.4/5 editorial score, not user reviews
What is AI Writing Detector & ChatGPT Detector?
A free, no-sign-up ChatGPT detector and AI writing detector that scores text across three signals: AI tell phrases, sentence rhythm, and an LLM judgement. Spots writing from ChatGPT, Claude, Gemini, Grok, and other LLMs. We are upfront about detector limits — most free tools are 50–65% accurate.
Built in-house at There Is An AI Tool, this detector runs an ensemble of three independent signals and shows you each one separately so you can see which signals are firing. The honest framing is the differentiator — most detectors overclaim accuracy. We tell you exactly where the tool is unreliable: short text, edited AI, technical writing, non-native English, translated text, and humanized output.
Key features
- Three independent detection signals
- No sign-up required
- 30–500 words per check
- Per-signal score breakdown + plain-English reasoning
- Honest accuracy disclaimer on every result
Pros
- Genuinely free, no account required
- Transparent — shows signals separately, not just one number
- Honest about limitations (most detectors overclaim accuracy)
Cons
- Limited to 500 words per submission
- Rate-limited to 5 detections per minute
- Like all free detectors, ~50–65% accurate per published research
Best for
Read more
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