From SEO to Educators
Most AI detection tools provide one score for a whole document. Our AI detector classifies each sentence separately and highlights lines with AI traits. See what is flagged and make data-driven decisions instead of guessing what the percentage means.
The tool works as a ChatGPT checker and recognizes other widely used and the newest flagship AI models. Get real-time AI scanning, protect academic integrity, support SEO content quality, and ensure writing authenticity in one click.
We don't expect you to take our word for it. Try it for free and decide for yourself!
99,23%, to be precise. That's the percentage of sentences correctly classified as AI across the seven most recent AI models we tested. Our carefully fine-tuned algorithm catches AI predictive text patterns and distinguishes them from human content, line by line.
Inspired by academic needs, trusted by educators. Our AI detector empowers teachers and students across 70 countries (and counting!) We ensure a seamless workflow by integrating with Moodle, Canvas, Google Classroom, and other popular LMSs. Our GPT detector is a reliable Turnitin alternative and your academic integrity guard.
Writers, editors, and businessmen use AI detection to guarantee their content is authentic, visible, and well-ranked by search engines. They need the most reliable AI detector for GPT-4o and Claude to keep up with fast-developing LMs (Large Language Models). Our tool has been tested on commercial content and trained to recognize the latest models.
The “most trusted AI detector” title means nothing without facts. We ran both internal tests and independent research to show you numbers.
Sentence-level analysis gives you evidence. With our AI content detector, you get a report with highlighted lines in question instead of an obscure general score. 41% AI content probability tells you nothing actionable. A whole conclusive paragraph recognized as AI provides a basis for a conversation. You see exactly what triggers the AI checker, and the rest is up to you to judge. Line-by-line checking is the biggest practical difference between our AI detector and whole-document classifiers.
Editing a social media post and checking a thesis paper are two very different tasks that shouldn't be measured by the same setting. As our AI detection tool highlights sentences, it's up to you to decide how many flagged lines make the text worth reviewing, in each particular case. We're not telling you what problematic is; we provide you with data to make informed decisions.
No AI detector is perfect; neither is ours. Sometimes we mistake human-crafted text for AI-generated, leading to false-positive results. Out of 2.805 human-written documents checked, we wrongly flagged 1.04% of sentences in them. However, at the document level, this error rate drops to zero, as a single misread sentence doesn't condemn a whole paper.
AI detection is neither magic nor a guessing game. It is a carefully crafted statistical judgment process based on several metrics, conducted sentence by sentence.
Any serious AI content detector is built around these two key parameters. Perplexity shows how surprised the GPT checker is by the next word in the sentence. AI text generators tend to pick the most likely relevant option, driving perplexity to a minimum. Human creativity, on the other hand, is limitless. The lower the perplexity metric is, the more chances are text has a robotic origin.
Burstiness reflects the variation in sentence length and complexity across the document. Human writing combines long intricate constructions with short clear sentences. AI text structure tends to be more even. Neither of the parameters on its own is a definite way to determine the text's origin, which is why a good AI content detector combines approaches and considers various measures.
Our natural language processing (NLP) pipeline analyzes predictive text patterns that are often a sign of robotic origin. The classifier was trained on human-written and machine-generated text to recognize their distinctive features. So, the AI writing detector looks into the vocabulary choice, sentence and document structure, punctuation, and transition phrasing characteristic of certain LLM families. As a result of line-by-line analysis, each sentence gets a probability score from 0 to 100, translated into being recognized (or not) and flagged (or not) as AI in your report.
Even the best AI checker will perform poorly if trained only on one model family. This is why our tool is not just a ChatGPT detector. Designed to recognize different models from various providers, it minimizes the chance that content will bypass AI detectors, whether it is GPT, Gemini Pro detection, or Claude Sonnet detection. We have tested how well our tool can check AI content generated by seven different models and got 98.31%-99.87% accuracy. The total spread across all models of 1.56 points proves it is a reliable ChatGPT checker and the best AI detector for catching content generated by the most popular providers.
AI detection is only a piece of the puzzle. “Is the content original?” “Is the work honest?” “Can we trust this data?” is what people really want to know, and these questions go far beyond “is it AI or not”. So, we are providing data to answer all of them.
Plagiarism and grammar check, authorship verification, and authenticity scanning, all in one report, integrated into your convenient environment. This is more than AI content detectors usually do, and this is why you don't need a dozen tools and a complicated workflow to get your job done.
Our AI detector scans your text line by line, giving a probability score to each sentence. You analyze the flagged sentences instead of a vague general score, and decide whether the result is concerning in your particular case. We don't tell you how much AI is wrong. We provide evidence; you draw the line.
Content originality includes not only human authorship. Plagiarism checker helps to catch matching extracts, links the sources, flags problematic parts, and provides an originality score in the same report along with AI detection output. You get a comprehensive analysis in one document and avoid AI plagiarism, which occurs when an AI tool copies or rephrases already existing text without referencing it.
Our AI detector elevates your routine instead of overcomplicating it with another step. Implement ChatGPT detector into your workflow with an API or connect with the LMS you use. Our checker offers integration with Canvas, Google Classroom, Brightspace, Populi, Moodle, Schoology, and Blackboard, along with browser extensions and a Google Docs add-on. Scan any page with your most trusted AI detector and don't worry about your content security; by default, we don't retain submitted documents, and educators can control their repository within integration.
Our tool is more than a GPT detector. Trained and tested on Google, Anthropic, OpenAI, and xAI models, it can recognize machine-generated content even when attempts are made to humanize AI text. No matter what model was used, if the text has AI traces, we will catch them.
We work with 15 languages for similarity checks and provide AI detection for content in English and Spanish. Non-native English writing has historically had the highest false-positive rates. Our sentence-by-sentence approach helps overcome biases, as the reviewer can see and analyze the flagged extracts rather than get a general verdict. Moreover, we admit the possibility of false positives and share the exact statistics rather than only accuracy numbers.
Approach to AI detection varies by domain and requires a tool that can be both flexible and precise in each particular case. With our AI detector, you set the threshold and adjust it exactly for the job you have.
AI checker for teachers needs to protect academic honesty without failing the students. False positives leading to false accusations come at a higher cost to learners than institutions, which is why we provide sentence-level analysis and present a clear picture. Instead of confusing teachers and students with an alarming “46% AI text” output, we highlight the sentences with the machine-text traces. This kind of report becomes a conversation starter and accelerates a constructive dialogue between educators and learners, promoting academic honesty and boosting writing skills rather than demonizing AI tools and AI detectors.
Content marketing is built on visibility and relevance. Since Google guidelines and other search engines encourage original input and added value, AI-generated text is ranked lower and promoted less than human-created content, putting the brand's overall presence at risk. Scanning SEO content before publishing helps to avoid AI detection penalties and ensure text quality, giving a chance to catch AI traces and edit or rewrite copy before publication or campaign launch.
Fact-checking and accuracy are essential in high-quality journalism, research, HR, and legal domains. AI detector is a crucial step in ensuring the writing's trustworthiness, combating fake news, and adhering to the highest standards in any industry. Whether you are working with articles, resumes, grant applications, expert reports, interviews, or legal documents, scanning for AI presence provides the confidence you need to move forward with your tasks.
Nowadays, it is hard to name a sphere not influenced by AI-based tools. As much as they can accelerate routines, it is essential to keep in mind that chatbots occasionally “hallucinate,” provide biased opinions, and even make up sources or information. AI content detectors are designed not to call AI technologies out for damaging the business. We need AI detectors to be aware of AI text presence so we can adjust our judgment, double-check facts, and encourage critical thinking.
Poor AI literacy can become a trap. AI presence awareness is empowering. Difference between the two? Implementing an AI detector.
AI detectors help to answer this question. Our checker provides evidence, highlighting sentences with AI traces, and you decide whether this amount of AI-generated text compromises the whole document's quality. We give you the data; you make a verdict.
AI checkers analyze the text by various parameters, comparing it to characteristics they know about AI and human writing. Our detector does it line by line, giving each sentence a probability score from 0 to 100. If the text matches patterns characteristic of AI-generated content, it will be flagged, and you will see it in your report.
You can use them as a compass, but still apply your critical thinking and expertise. AI detectors highlight the parts that require attention, but the final judgment is yours to make. Modern checkers claim to have 95-99% accuracy, but still no tool is flawless, and all are susceptible to producing false positives.
Humanized and hybrid content is the biggest challenge to AI detectors. The checkers are able to catch some of it, but the detection accuracy drops compared to classifying pure AI/human text.
To be efficient, AI checkers have to adjust to the rapidly developing AI models market and cover a variety of models, performing Grok 4.3, GPT-5.5, and Llama 3 detection with equal or nearly equal precision. When opting for a detector, check their benchmark test results to ensure the tool is trained on a relevant dataset.
No tool is completely foolproof, and an AI checker alone can fail to check humanized content or stealth AI. A comprehensive approach proves to be a more reliable strategy. If you compare the student's work in question against their previous papers, the conclusion is usually pretty apparent. This is exactly what our Authorship Verification feature is designed for.
Google doesn't publish a detector, and its guidelines emphasize originality, relevance, and adding value rather than the text's origin. So, Google AI penalty is more about low-ranking content that demonstrates little effort, originality, or added value, rather than AI presence itself. Reviewing the text before publication to ensure its quality is the best way to avoid AI detection penalties, and an AI checker is a good starting point.
There is no such thing as the best AI checker, but there is the best fit for your purposes. Research the market, compare the benchmarks, and try different tools to find the one that performs best on your tasks.
Yes, but completely free tools usually deliver poor results, as supporting an efficient, regularly updated checker is a demanding task. Our checker suggests affordable paid plans, and you can check a short text to see how it works for free.