AI Text Detector

Our AI text detector uses advanced machine learning models trained on millions of human-written and AI-generated text samples from GPT-4, ChatGPT, Claude, Gemini, and other major AI systems. The detector analyzes multiple linguistic patterns including sentence structure, word choice, writing style, semantic coherence, and statistical patterns that distinguish AI-generated content from human writing. It provides a confidence score (0-100%) indicating the likelihood that text was created by AI tools. All analysis happens instantly in your browser using our free AI checker—no uploads, no data storage, 100% private.

Our AI text detector achieves 99%+ accuracy on most modern AI models including GPT-4, GPT-5, Claude 4, DeepSeek-V3, and Gemini when analyzing texts of 350+ characters. Accuracy is context-dependent: longer texts (500+ words) provide more reliable results, while very short texts (under 50 words) may be less accurate. The detector is continuously updated to recognize the latest AI models and their writing patterns. However, no detector is 100% perfect—we recommend using results as a guide alongside other assessment methods, especially for academic integrity purposes.

False positives occur in less than 0.2% of cases, typically with highly formal, technical, or structured writing that shares characteristics with AI-generated text. The detector may flag human-written content as AI if it's very structured, uses formal language, lacks personal writing style, or follows predictable patterns. This is why we emphasize using the detector as one tool among many—always consider context, writing style, student history, and other factors before making conclusions. If you see a false positive, it's often because the writing style is unusually formal or structured.

Yes, our AI text detector can identify mixed content at the sentence level. When text contains both AI-generated and human-written sections, the detector provides an overall score reflecting the proportion of AI content. For best results with mixed content, analyze longer texts (500+ words) where patterns are more distinct. The detector works best on complete documents rather than short snippets, as it needs sufficient linguistic data to distinguish between human and AI writing patterns.

For reliable results, we recommend analyzing at least 350 characters (approximately 50-70 words). However, accuracy improves significantly with longer texts—300+ words provide much more reliable detection. Very short texts (under 50 words) may produce less accurate results because there's insufficient linguistic data to analyze patterns. For academic or professional use, analyze complete paragraphs or documents for best accuracy. The optimal length is 500+ words for maximum confidence in detection results.

Our AI text detector can identify content from all major AI models including ChatGPT (GPT-3.5, GPT-4, GPT-5), Claude (Claude 3, Claude 4), Google Gemini, DeepSeek-V3, Anthropic models, and other transformer-based language models. The detector is regularly updated to recognize the latest AI models and their writing patterns. It's particularly effective at detecting GPT-4, Claude 4, and newer models released in 2025-2026. We monitor emerging AI systems and update our detection algorithms accordingly.

Yes, 100% private and secure. All text analysis happens entirely in your browser—your text never leaves your device. We don't store, upload, or have access to any of your content. This ensures complete privacy and security, making it safe to analyze sensitive documents, academic papers, or confidential content. No account required, no data collection, GDPR compliant. Your privacy is our top priority—we built this free AI checker to be completely client-side for maximum security.

No, absolutely not. All processing happens in your browser using JavaScript. Your text never leaves your device—we don't upload, store, or have access to any of your content. This is a true client-side tool, meaning everything happens locally on your computer. This ensures complete privacy and makes it safe to analyze sensitive documents, student essays, or confidential business content without any risk of data exposure.

Yes, our AI text detector is designed for educational use. Teachers can use it to identify potential AI-generated content in student submissions. However, we strongly recommend using it as one tool among many—combine it with your knowledge of student writing style, assignment context, and other assessment methods. Always discuss concerns with students directly rather than relying solely on detection scores. The tool works best on longer assignments (500+ words) where patterns are clearer. Remember: detection results should inform conversations, not replace professional judgment.

Use AI detection results as a starting point for investigation, not as definitive proof. If a student's work shows high AI probability, consider: (1) Does this match their previous writing style? (2) Is the complexity appropriate for their level? (3) Are there personal insights or examples? (4) Can the student explain their process? Always have a conversation with the student before taking action. Detection tools are most effective when combined with your professional judgment and knowledge of your students.

Yes, businesses use our AI text detector for content quality control, hiring resume screening, and employee content review. It helps identify AI-generated content in blog posts, marketing materials, and other business communications. However, remember that AI detection is not the same as plagiarism detection—AI-generated content is original but may not meet quality standards. Use results to inform content review processes and ensure authenticity in business communications.

Currently, our AI text detector is optimized for English text and provides 99%+ accuracy for English content. Detection accuracy for other languages ranges from 85-98% depending on the language. We're continuously improving multilingual support. For best results, analyze English text. We're working on expanding support for Spanish, French, German, and other major languages in future updates. If you need to check non-English text, results may be less reliable.

AI text detection has several limitations: (1) Very short texts (under 50 words) are harder to analyze accurately, (2) Highly edited or paraphrased AI content may be harder to detect, (3) Formal or technical writing can sometimes be flagged incorrectly (false positives), (4) New AI models may not be immediately recognized until the detector is updated, (5) Human-written content that's very structured may trigger false positives, (6) Creative writing with unique styles may be misclassified. Always use detection results as a guide, not absolute proof. Context matters—combine detection with other assessment methods.

Even when AI-generated text is paraphrased or edited, it often retains underlying patterns that detectors can identify. These include: sentence structure patterns, semantic coherence, word choice distributions, and statistical linguistic features. While heavy editing can reduce detection accuracy, most paraphrasing tools don't fully eliminate these patterns. Our detector analyzes deep linguistic features, not just surface-level text, which is why paraphrased AI content often remains detectable.

Our AI text detector can analyze text at both document and sentence levels. Sentence-level detection identifies which specific sentences are likely AI-generated within a larger document. This is particularly useful for detecting mixed content where some sentences are human-written and others are AI-generated. The detector uses contextual analysis, comparing each sentence against patterns learned from millions of AI and human text samples. This granular approach helps identify partial AI usage in otherwise human-written documents.

No, AI detection and plagiarism detection are fundamentally different. AI detection identifies whether text was likely generated by AI tools (ChatGPT, Claude, etc.), while plagiarism detection checks if text was copied from existing sources. AI-generated content is original (not copied) but may still violate academic or editorial policies. Our tool focuses specifically on AI detection, not plagiarism checking. For plagiarism detection, you'd need a separate tool like Turnitin or Copyscape. Some tools combine both features, but they serve different purposes.

No, this tool is designed to detect AI-generated text, not to bypass detection. Our AI text detector helps identify AI content for educational, editorial, and quality control purposes. We believe in transparency and authenticity in content creation. If you're looking to make AI-generated text more human-like, we recommend editing and rewriting the content yourself rather than using automated bypass tools. Authentic writing is always the best approach.

Our free AI text detector offers several advantages: (1) 100% client-side processing for complete privacy, (2) No account required, (3) 99%+ accuracy on modern AI models, (4) Sentence-level detection for mixed content, (5) Continuously updated for latest AI models, (6) No data storage or uploads. Unlike some competitors, we prioritize privacy and don't require registration. Our detector is optimized for GPT-4, Claude 4, and newer models, making it effective for detecting the latest AI-generated content.