AI or Not

AI or Not is a free AI detector that analyzes text and returns an AI-probability score with a confidence level, plus sentence-level highlights for supported languages. It detects content from ChatGPT, Claude, Gemini, and other popular models, and also offers detectors for images, video, voice, and music. It is for students, writers, researchers, and professionals who need to verify content authenticity without paying for enterprise tools.

How it works

Paste any text into the detector and get an AI-probability score in seconds. The tool analyzes structural patterns such as sentence rhythm, repetition, and predictability, rather than word meanings, so it works across many languages. For supported languages, it highlights the exact sentences that read as AI-generated, and every result includes a confidence level so you know how much weight to put on the score.

Key capabilities

AI or Not detects text from ChatGPT, Claude, Gemini, Copilot, and other popular models by looking for shared structural patterns rather than matching one model's signature. It also offers dedicated detectors for AI images, video, voice, and music, so you can verify almost any kind of content from one place. The tool is tuned to keep false positives low and treats every score as a strong signal to weigh with context, never a final ruling.

Who it is for

AI or Not is built for students checking essays and assignments before submission, writers keeping their bylines credible, and professionals screening reports and proposals for AI-generated filler. It is also useful for researchers and anyone who needs to verify content authenticity without creating yet another account. The tool is free, requires no sign-up, and works instantly, making AI detection accessible to everyone.

Pricing and limits

AI or Not is free to use with no account required, offering 5 free text checks per day. You can paste up to 500,000 characters per check, far more than most detectors. Creating a free account unlocks higher daily limits and keeps a history of every check you run. The tool works on text in many languages, including English and Chinese, with results most reliable on languages with more training data.