Trusted AI Detector tool - Free check AI

AutoTDK's AI Detector is a free multilingual AI text detection tool that supports detecting content generated by mainstream large models such as ChatGPT, Claude, Gemini, etc., with a detection accuracy of up to 99%.

Paste Text
-- %
of text is likely AI-generated
-- %
AI-generated
-- %
Human-written

How to Check If Something Was Written by AI?

Step 1 – Upload or Input
Step 2 – Click "AI Detect" button
Step 3 – Get AI test results
1

Step 1 – Upload or Input

2

Step 2 – Click "AI Detect" button

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Step 3 – Get AI test results

You can upload a file (.docx, .pdf, .txt) by clicking on it in Method 1, or fill in the text content for AI detection by copying and pasting or manually entering it in Method 2.
After clicking the "AI Detect" button, our AI Detector tool will automatically scan the AI components in the text. You only need to wait for a moment. At the same time, our AI-detected text supports multiple languages.
You can distinguish the test results by color, and you can also continue to add or modify content in the test results. Before testing again, please copy the content first and paste it into the text area after resetting. If you want to share the results, you can export them.
Step 1 – Upload or Input
1

Step 1 – Upload or Input

You can upload a file (.docx, .pdf, .txt) by clicking on it in Method 1, or fill in the text content for AI detection by copying and pasting or manually entering it in Method 2.
Step 2 – Click "AI Detect" button
2

Step 2 – Click "AI Detect" button

After clicking the "AI Detect" button, our AI Detector tool will automatically scan the AI components in the text. You only need to wait for a moment. At the same time, our AI-detected text supports multiple languages.
Step 3 – Get AI test results
3

Step 3 – Get AI test results

You can distinguish the test results by color, and you can also continue to add or modify content in the test results. Before testing again, please copy the content first and paste it into the text area after resetting. If you want to share the results, you can export them.

What Users Say About Our Free AI Detector

As a teacher, I have always been concerned about AI writing homework. This AI detection tool can help me quickly determine whether a student's assignment is generated by AI. The results are clear and quick.
the AI detector tool makes editing client drafts a breeze. The AI scanner flags anything that reads as machine‑generated, and I often switch to the free AI text checker for a fast second opinion. It’s great AI checker I’ve tried.
Handling dozens of pages daily, I rely on the AI detector free tier to verify originality. The chatGPT detector integration spots churned‑out text in seconds, and the AI content detector report is always precise.
As an educator, I need to ensure essays are authentic. The AI writing detector and AI essay checker modules help me check for hidden AI‑generated passages, and the AI detector tool never misses a phrase.
Running ad campaigns means checking ad copy for authenticity. I switch between the AI checker free option and the GPT detector to catch any automated text. The combined free AI text checker feature is a lifesaver.
I do quick content audits with AutoTDK’s AI detector tool. The AI text detector interface is clean, and I especially like the “AI detection free” shortcut when I’m on the go. Great AI tester.

AI Detector FAQs

  • What is the AI detector?

    AutoTDK's free AI detector can analyze texts from platforms such as ChatGPT, Claude, and Gemini. It also provides free and reliable AI detection services with an accuracy rate of up to 99%. It supports detection in multiple languages.

  • Is AI detector accurate?

    AI Detector uses advanced algorithms to analyze and detect AI-generated content in texts or files. We provide results close to 100% success rate. No tool dares to say that it is perfect. The detected content that is identified as AI will be highlighted.

  • How do teachers check for AI?

    Step 1 - You can enter text manually or upload a file that meets our function recognition rules;
    Step 2 - Click the AI Detection button;
    Step 3 - The detection tool will display the final AI generation ratio and Human generation ratio, as well as the highlighted AI text, and you can also export the results and share them with your students to let them rewrite;

  • how to get AI detector for free?

    The detection tool is completely free to use, but we are afraid that someone will waste the checking AI resources, so we have a daily free detection limit of about 10,000 characters.

  • Do colleges check for AI in application essays?

    You need to ask your professor or journal in advance about the requirements for AI detection to prevent rework due to too high a percentage of checking for AI. Their requirements are constantly changing.