AI Detection You Can Trust
Detects AI content from ChatGPT, Gemini, Claude, Grok and more. Powered by It's AI.
99%
Accuracy
#1 AI detector
by MGTD Benchmark
Free
5 free scans each day
Why It's AI?
Accurate. Simple. Affordable.
The most accurate AI detector in the worldPowered by It’s AI — the most accurate AI detector according to MGTD benchmark (ICAIE, 2025). It is the biggest and most robust benchmark for AI checkers, consisting of 15 other datasets and almost 2M samples, where our solution ranked as #1 by accuracy.
Top MGTD Roc-Auc
AiChecker (It's AI)
1
👑GPTZero
2
Originality
3
ZeroGPT
4
<1% FPR
AiChecker.ai models minimise False Positive Rate. Our FRP on student writings dataset (ASAP 2.0) is 0.8%.
99.1%
accuracy
Our average score among GRiD, HC3 and GhostBuster benchmarks.
3rd Parties Verified
Verified by WASET-published research, included into RAID official leaderboard
All in one solution for AI detection
Word-Level Highlights
In addition to just classifying texts, It’s AI also provides a deep scan functionality, which shows probabilities of AI for each sentence in the text. In addition to just classifying texts, It’s AI also provides a deep scan functionality, which shows probabilities of AI for each sentence in the text.
Suits for everyone
Writers
Really love the britishizer part. It saves a lot of time when it comes to polish creatives after you make them with AI help.
Teachers
Really love the britishizer part. It saves a lot of time when it comes to polish creatives after you make them with AI help.
Students
Really love the britishizer part. It saves a lot of time when it comes to polish creatives after you make them with AI help.
Managers
Really love the britishizer part. It saves a lot of time when it comes to polish creatives after you make them with AI help.
Recruiters
Really love the britishizer part. It saves a lot of time when it comes to polish creatives after you make them with AI help.
ML Engineers
Really love the britishizer part. It saves a lot of time when it comes to polish creatives after you make them with AI help.
Reviews
Copywriter at TotoGaming
Flora Gevorgyan
It's AI became an irreplaceable part of my work - much more accurate than other ai-detectors. Now each text, where I use ChatGPT or similar services, I check with It's AI and it shows which part of text looks artificial, so that I could rewrite them.
Product manager at INCYMO.A
Dora Akulshina
Great tool for improving my reports and technical specification, before giving them to the team. Simple and efficient - just like it should be.
Marketer at Mochi Health
Brendan Kelly
Really love the britishizer part. It saves a lot of time when it comes to polish creatives after you make them with AI help.
Go beyond the limits
300,000 scan words per month
Batch scanning
Unlimited amount of deep scans
Document upload
FAQ
How do AI detectors work?
AI detectors estimate whether text looks machine-generated by analyzing patterns in wording, structure, and probability—often compared to what large language models (like ChatGPT, Gemini, or Claude) typically produce. AiChecker.ai is powered by It's AI models that score full passages and, in deep scan, individual sentences so you can see which parts look most AI-like.
How can I tell if text was written by AI (ChatGPT, Gemini, Claude, or Grok)?
Paste your text into AiChecker.ai and run a scan. Simple scan gives one overall AI probability for the whole piece. Deep scan goes further with sentence-level scores and highlights so you can see which lines look most like AI-generated writing—useful for essays, posts, and reports.
What is the most accurate AI detector—and how does AiChecker.ai compare?
Benchmarks vary, but It's AI—the engine behind AiChecker.ai—is built for high accuracy: on the MGTD benchmark (ICAIE, 2025), it ranked #1 among AI detectors in that evaluation. You get clear scores, strong performance on held-out test sets, and optional deep analysis with sentence-level highlights instead of a single opaque score.
Is AiChecker.ai a free AI detector?
Yes. You can use AiChecker.ai as a free AI checker with a daily allowance of scans so you can try AI text detection before upgrading. Paid plans unlock higher limits and features like batch scanning and more monthly volume.
Do teachers and schools use AI detectors?
Many educators use AI detection software to review student work alongside their own judgment. AiChecker.ai works anywhere you can paste text—assignments, discussion posts, or admissions essays—without requiring a specific LMS. Always follow your institution’s academic integrity and AI policies.
What is the difference between Deep scan and Simple scan?
Simple scan returns one overall probability that the text is AI-generated. Deep scan adds per-sentence probabilities and highlights so you can see which segments look most AI-like—better for long documents and detailed review.
Is my content private when I use an AI checker?
Your text is analyzed to return a result and is not used to train public models or shared as marketing material. Treat any AI detector as handling sensitive content carefully: don’t paste secrets or regulated data you’re not allowed to send to a third-party service.