AI Detector
Free AI content detection website. Its official website features unlimited word count, supports analyzing about 5,000 words in a single box, offers three entry methods: text, document and URL, and emphasizes using multiple detectors to reach a consensus and reduce false positives.
Updated: 2026-10-26
What is AI Detector?
AI Detector is a free AI content detection website. Its official website promotes "100% FREE" and "unlimited word count". Each input box can analyze approximately 5,000 words, and it supports three entry points: text analysis, document analysis, and URL analysis. Its most distinctive feature is its emphasis on the consensus of multiple detectors. The official slogan is "One detector is a guess. Four is a verdict."
Who is it for?
- Teachers and academic administrators who need to use test results as a basis for communication and keep them on file.
- Editors who need to check long manuscripts in one go and require segment-by-segment scanning.
- Students and freelance writers who want to verify if their writing "sounds like AI".
- Content platforms that need to batch-check the originality of external manuscripts.
- Editors and investigators who obtain a URL and want to determine whether its main content contains AI-generated material.
Key features
8AI Content Detector
Detects generated text from mainstream models such as ChatGPT, Claude, and Gemini.
Consensus Detection
The official website advocates for a conclusion based on the consistent judgment of three or more detectors, stating that this can reduce the false positive rate to nearly zero.
Color-Coded Heatmap
Highlights segments in the text with a higher probability of being AI-generated using color-coded heatmaps.
Confidence Scores
Provides confidence ratings instead of a single yes-or-no conclusion.
Exportable Reports
Detection results can be exported as reports for easy filing and communication.
Plagiarism Check
A plagiarism check feature alongside AI detection.
Built for Everyone
The official website provides usage instructions tailored to different roles such as teachers and students.
Three Entry Points
Supports directly pasting text, uploading documents, or entering URLs to analyze web content.
How to use AI Detector
- 1The official website cites its own research to show that a single detector has false positives, so do not take a single report as conclusive evidence.
- 2Each box can handle approximately 5,000 words. When detecting long texts in segments, make sure to interpret each segment independently and do not simply take the average.
- 3The official website lists data such as 99.1% accuracy and 93.9% real AI detection rate. It is recommended to test with your own samples first in important scenarios.
- 4Export the report and share it with the other party; it is easier to advance communication than to just verbally state "AI detected".
- 5In cases involving grade assessment or disciplinary action, be sure to retain the manual review process.
- 6The official website states that the average scanning time is about 3 seconds, but long texts and peak hours may slow it down. Don't wait until the deadline to run the scan.
- 7The official website states that it has over 500,000 active users and a cumulative total of over 5 million analyzed texts. Such data is for reference only and represents the official statement.
Traffic & popularity
Data month Sep 2026
AI Detector receives about 257.3K visits per month and ranks #182,488 worldwide.
Monthly visits
12 monthsTraffic sources
- Search64.1%
- Direct29.7%
- Referrals4.8%
- Social0.7%
- AI assistants0.6%
Top countries
- United States28.9%
- Australia11.4%
- Indonesia4.8%
- India4.0%
- Canada3.6%
Estimated from third-party traffic data.
Similar tools
IsGen.aiA multilingual AI content detection tool, the official claims it supports more than 80 languages and covers Chinese scenarios. It provides sentence-level and phrase-level analysis, plagiarism detection and grammar checking, along with batch scanning and report generation.
Smodin AI DetectorThe AI content detection tool under Smodin, according to its official website, can identify text generated by mainstream models, covers more than 100 languages, and supports pasting text or uploading documents for quick scanning and providing probability scores.
PhraslyAn online tool that provides free AI detection and plagiarism check, the official website claims that its accuracy in detecting text generated by mainstream models reaches 99.8%, with no word limit, results generated in seconds, and specific sentences triggering detection will be highlighted.
uPass AIuPass AI is an AI detection and text rewriting tool for students. Officially, it claims to make rewritten text harder to detect while reducing repetition rates, and it aggregates results from multiple detectors for self-checks.
Winston AIAn AI content detection tool for education, publishing and SEO teams, with an official accuracy rate of 99.98%; it supports OCR recognition of scanned documents, sentence-by-sentence prediction graphs, plagiarism check and AI image detection, and can generate shareable authenticity reports.
CopyFindCopyFind is a free online plagiarism and AI content detection tool. You can paste text or upload documents to compare web page duplicates and rewrite traces. The official website states that uploaded files are not saved, and it supports comparison with target websites.