AI Content Detector
Model:
Honest note on AI detectors:AI detectors are not reliable. Academic research (Stanford HAI, Vanderbilt, University of Maryland) shows false-positive rates of 5–15% on genuine student writing and false-negative rates that climb above 30% on modern models (GPT-4+, Claude, Gemini). Our score reflects pattern-matching heuristics (perplexity, burstiness, AI-tell phrasing), not ground truth. Do not use this to accuse anyone of academic misconduct. Use it to audit your own drafts or as one signal among many.
VerdictPattern-match score, not ground truth.
100% human100% AI
AI-tell signals detected
Per-sentence confidence
Advanced options
Result
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Scan any draft for AI-tell patterns. Free to use, no account needed.
How to Use AI Content Detector
1
Open AI Content Detector
Open AI Content Detector on Rewind.ai. No account needed to start.
2
Add your input
Enter your text or upload a file, then set any options AI Content Detector offers.
3
Get the result
AI Content Detector runs on our own GPU servers and returns a result in seconds. Download it, copy it, or share the link.
Use this tool via API
Call this tool straight from your own scripts. The endpoint follows the OpenAI REST format and signs requests with a bearer token, so client libraries you already use keep working. You are billed the same token rate as the web app.
curl -X POST https://api.rewind.ai/v1/chat/completions/ \
-H "Authorization: Bearer sk-rewind-..." \
-H "Content-Type: application/json" \
-d '{"model": "qwen/qwen-2.5-7b-instruct", "messages": [{"role": "user", "content": "Score this text for AI-generation likelihood..."}]}'AI Content Detector FAQ
AI Content Detector on Rewind.ai is a free AI tool. There's no charge and no sign up needed to start.
Yes. You get 2,500 free tokens per day to use AI Content Detector and every other tool on Rewind.ai. A free account raises that to 5,000 tokens/day. You can buy more starting at $1.
AI Content Detector runs open-source AI models on our GPU servers. Send your request and the result comes back in seconds.
No. You can use AI Content Detector right away without signing up. A free account doubles your daily usage to 5,000 tokens and saves your history.
Anonymous users get 2,500 tokens/day. Free accounts get 5,000 tokens/day. Tokens reset every 24 hours. Each generation costs ~100-5,000 tokens depending on the operation.
Your data is processed on our servers and isn't stored permanently unless you choose to save it. We don't sell or share it.
Yes. Content from AI Content Detector is yours to use for personal or commercial work. The AI models we run are commercially licensed.
AI Content Detector matches the quality of paid services because it runs the latest open-source AI models. The difference is you don't pay per use.
AI Content Detector runs open-source AI models including Qwen 2.5, FLUX and Whisper. We update to newer models as they ship.
Yes. AI Content Detector works in any mobile browser, and the layout adapts to your screen size.
Sign up for a free account to get 5,000 tokens/day, double the anonymous limit. Or buy token packs starting at $5 for 200,000 tokens. See /pricing/ for all options.
Yes. After you generate content, you can download it, copy it, or share it via a unique link. Signed-in users can also view their generation history.
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