| What it does | Plagiarism checker and AI detector using DeepSearch™ technology to scan billions of sources
| Free AI detector for ChatGPT, GPT-6, Claude and Gemini that scores text and highlights likely AI-generated sentences
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| Stage | Established
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| Founded | 2016
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| Based in | US
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| Pricing model | Freemium
| Free
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| Pricing | Not given
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| Key features | - Plagiarism detection with DeepSearch™ technology scanning billions of sources
- AI detector for ChatGPT, GPT-4, Gemini and other AI models
- Sentence-level AI detection with confidence scores
- ColorGrade™ feedback to distinguish exact vs fuzzy plagiarism matches
- AI Humanizer to make AI-generated text sound natural
- AI Summarizer to instantly condense documents into key points
- Citation generator supporting MLA, APA, and Chicago formats
- AITutorMe paraphrasing tool with multiple output options
| - Sentence-level highlighting of AI-like text
- Paste text or upload files (.txt, .docx, .pdf)
- Detects patterns from ChatGPT, GPT-6, Claude, and Gemini
- No sign-up or account required
- Private text processing
- Minimum 50 words required for checking
- Identifies repetitive vocabulary and generic wording patterns
- Works in browser without installation
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| What makes it different | - DeepSearch™ technology uses contextual analysis and semantic understanding rather than just keyword matching to detect paraphrased plagiarism
- All-in-one platform combining plagiarism detection, AI detection, humanization, summarization, and paraphrasing in one place
- Trusted by over 10 million students, teachers, and professionals worldwide
- Supports 17+ languages including English variants, French, Spanish, German, Italian, Portuguese, Polish, Romanian, Dutch, Turkish, Vietnamese, and Indonesian
| - Sentence-level highlighting shows exactly which parts appear AI-generated, not just a percentage
- Detects multiple AI models including ChatGPT, Claude, and Gemini
- Optimized for ChatGPT and newer GPT-6 style text
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 72 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 24 | 0 |
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| Citation Flow (Majestic) | 42 | 0 |
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| Referring domains (Majestic) | 2094 | 0 |
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ChatZero