AI Text Detector — Free ChatGPT & GPT Checker
Check any text for AI-generated content with ZeroGPT's free AI text detector. Detect ChatGPT, GPT-4, and other AI writing with sentence-level analysis and confidence scoring. Get instant results for essays, articles, and documents.
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How ZeroGPT AI Text Detector Works
The scanner analyzes your text for the statistical fingerprints of machine-generated language — patterns in word choice, sentence rhythm, and predictability that differ from typical human writing. Results come back as an overall confidence score plus sentence-level flags, so you can see exactly which parts of a passage drove the verdict instead of trusting a single number.
Sentence-Level AI Detection
Unlike basic AI checkers, ZeroGPT highlights specific sentences that show AI patterns, giving you granular insight into which parts of your text may be AI-generated.
Built for English Content
The detector is tuned specifically for English text. Other languages are not yet officially supported, and results outside English should not be relied on.
Frequently asked questions
Every scan returns a confidence score with sentence-level flagging, not a binary yes/no. Treat it as one signal, not proof — like every AI detector, it can be wrong on heavily edited or paraphrased text, and we design the interface to say so rather than overclaim.
The detector is built and tuned for English text. We don't yet officially support other languages, and we'd rather say that plainly than overclaim.
You can paste or upload up to 150,000 characters per scan. For reliable results, we recommend at least 300 words — very short passages don't give the model enough signal.
ZeroGPT is a separate tool that covers text, image, and video detection in one workspace, with sentence-level flagging and a plain-language verdict alongside the confidence score. We don't have a view on how other detectors perform — every AI detector, including ours, should be treated as one signal rather than definitive proof.
Yes, ZeroGPT can detect text generated by ChatGPT, GPT-4, and other large language models. Our AI text detector analyzes statistical patterns common to AI-generated content regardless of which specific model produced it.
Yes, ZeroGPT offers 3 free AI detection scans without requiring signup or registration. This applies across all our detection tools including text, image, and video detection.
Most text scans complete in under 5 seconds. Longer documents may take slightly more time, but results are typically delivered within 10 seconds regardless of text length.
Yes, ZeroGPT provides sentence-level highlighting that shows exactly which parts of your text show AI patterns. This granular analysis helps you understand which specific sentences drove the overall confidence score.
Heavy editing can reduce detection accuracy because it moves text away from typical AI statistical patterns. However, light edits usually don't significantly impact the detection score. No detector can guarantee 100% accuracy on heavily edited content.
Yes, ZeroGPT is commonly used by students and educators to check academic work for AI-generated content. However, remember that detector results should be treated as one signal among several, not as definitive proof, especially in academic integrity decisions.