Detect AI-generated text instantly with SynthQuery's free AI detector. Paste any text and get a sentence-level AI probability score with a visual heatmap showing which parts are likely AI-written. Works with ChatGPT, GPT-5, Claude, Gemini, and other LLMs.
Copy and paste the text you want to check into the editor. The free tier supports up to 1,500 characters per check.
Hit the Analyze button (or press Ctrl+Enter). The detector runs in seconds.
See your overall AI probability score, a Human/Mixed/AI verdict, and a sentence-level heatmap. Green means human, red means AI.
For tricky or mixed content, upgrade to Pro for DeepScan mode — a second-pass analysis with higher accuracy.
No sign-up required. Start using AI Content Detector for free right now.
Try AI Content Detector Free