TheChecker.AI identifies AI-generated text from Claude, GPT-5, Gemini, and 40+ models. Trusted by 10,000+ students, writers and professionals who read their own work before anyone else does.
Join 10,000+ students, writers & content professionals
Results processed in 2.3 seconds. Our models check 14+ statistical language markers. Each analysis includes sentence-level scoring and confidence assessments.
Connect our AI detector and humanizer to Claude — or any MCP client — as native tools. Same engines, same account, no copy-paste between tabs.
detect_ai_contentScores any text for AI-generated content, right from the chat.
humanize_textRewrites AI text to read naturally, without leaving Claude.
As Featured In
The same class of reading your university or your editor runs — except you get to see it first.
Detects Claude 3, GPT-5, Gemini Ultra and 40+ AI models with industry-leading precision
Get results in seconds for all major AI models including latest releases
Read your own draft the way your school or your editor will, while you can still change it
Comprehensive coverage of ChatGPT, Claude, Gemini, Llama, and emerging models
Your content is secure and never stored on our servers
Whether you are a student checking a draft before you hand it in, a professional making sure your own writing does not read as machine-written, or an editor reviewing what came in, TheChecker.AI tells you where you stand while you can still do something about it.
TheChecker.AI uses advanced natural language processing to analyze writing patterns at the sentence level. Our proprietary models examine perplexity, burstiness, and statistical patterns that distinguish human writing from AI-generated text.
Try DemoOverall AI Probability
99.86%
Likely AI-Generated
White Nights by Fyodor Dostoevsky examines loneliness, romantic idealism, and the tension between imagination and reality through the perspective of the unnamed Dreamer. The narrator lives largely in a world of fantasy until he meets Nastenka, whose presence briefly brings him into genuine human connection. Dostoevsky uses this short encounter to illustrate how deeply isolated individuals may form intense emotional attachments when given even a small opportunity for companionship.
4850 / 1000 characters
Flagged by an AI detector? Our humanizer rewrites the text to read naturally while keeping your meaning intact — billed by word credits, with 1,000 free words to start.
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Hear from educators, content managers, and academic leaders who rely on TheChecker.AI to maintain content integrity every day.
“TheChecker.AI has transformed how we handle academic integrity. I've reviewed over 500 student essays this semester, and the detection consistency is remarkable across different writing styles. It's now an essential part of our grading workflow that every instructor in our department relies on.”
“We use TheChecker.AI to verify all our published content, and it regularly catches AI-generated sections that our editorial team missed during manual review. The model identification feature is especially valuable, telling us exactly which AI was used. It's saved us from publishing unverified AI content multiple times.”
“The best AI detection tool we've used across multiple departments. We integrated it directly with our LMS, and the seamless setup meant faculty adoption was nearly instant. Over 40 instructors now use it daily, and the feedback has been overwhelmingly positive from both staff and administration.”
Get accurate AI detection results in three simple steps.
Simply paste or type the content you want to analyze
Our system analyzes text against Claude 3, GPT-5, Gemini and 40+ AI model signatures
Receive detailed results with model identification and confidence scores
The entire process takes just seconds. No complex setup or technical knowledge required. Start with our free demo to see the results for yourself, then upgrade to Pro for unlimited access and advanced features like sentence-level analysis.
Choose the plan that fits your needs. All plans include our core AI detection features.
Full access to AI detection with no commitment
Best value for students and professionals
Everything you need to know about AI detection from TheChecker.AI.
TheChecker.AI achieves 93% accuracy in detecting AI-generated content across 40+ models including Claude 3, GPT-5, Gemini Ultra, Llama, and other popular AI systems. Our detection engine is continuously updated as new models are released to maintain this high level of accuracy.
TheChecker.AI can detect content generated by over 40 AI models including OpenAI's GPT-4 and GPT-5, Anthropic's Claude 3 and Claude 3.5, Google's Gemini Ultra, Meta's Llama, Mistral, and many more. We regularly update our detection capabilities as new models emerge.
Yes, TheChecker.AI offers a free demo that allows you to test our AI detection on sample text. For unlimited access with full features including sentence-level detection and priority support, our Premium plan starts at $9.90 per month.
Our AI detection technology analyzes text patterns, writing style patterns, and clues that AI models leave behind. Each AI model has distinctive markers in its output. TheChecker.AI identifies these patterns and provides a confidence score along with the likely source model.
Yes, your privacy is our priority. Content submitted for detection is analyzed in real-time and is not permanently stored on our servers. We follow strict data protection rules and never share your content with third parties.
Yes, and that is what most people come here for. You get a sentence-level reading of your own draft before it is handed in, published or sent. The platform is also used by 500+ educational institutions, so the reading you see is the same class of reading an institution runs — you are just seeing it first.
TheChecker.AI provides results in seconds. Our real-time analysis engine processes your text instantly, delivering detection scores, model identification, and confidence levels without any waiting period.
While paraphrasing tools can change surface-level wording, TheChecker.AI analyzes deeper writing patterns that these tools cannot fully remove. Our detection models are specifically trained to catch common evasion techniques, so paraphrased AI content is still flagged with high accuracy.
TheChecker.AI stands out with 93% accuracy across 40+ AI models and the ability to identify which specific AI wrote the content. Built with an education-first approach, we offer transparent pricing and a free demo so you can see results before committing.
TheChecker.AI is currently optimized for English content, which delivers our highest detection accuracy. Multi-language support is on our roadmap, and our team is actively working on expanding language coverage to serve a global audience.
Join thousands of students and professionals who run their own work through TheChecker.AI first. Claude, GPT-5, Gemini and 40+ AI models, at 93% accuracy.