| What it does | Prove a human made it
| AI detector that identifies content generated by large language models
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| Stage | Not given
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| Founded | Not given
| 2023
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| Based in | Not given
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| Pricing model | Freemium
| Freemium
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| Pricing | Free: 3 certificates a month. Pro: $19 per month for unlimited certificates and two registered computers. Studio: $39 per month for everything in Pro plus studio branding on certificates and five registered computers.
| Free tier for basic AI detection up to 10,000 characters. Professional plan available with pricing details on subscription page. API pricing available for developers.
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| Key features | - Records file growth between saves without opening file contents
- Tracks which applications were in front during work
- Counts pen strokes and monitors pen rhythm
- Generates signed, timestamped certificates clients verify in browser
- Works with any drawing app including Photoshop, Clip Studio Paint, Figma, and Krita
- Supports writing apps: Word, Pages, Scrivener, Ulysses, Obsidian
- Works with external tablets: Wacom, Huion, XP-Pen, Cintiq
- Browser-based Procreate file sealing without installation at drawdog.art/seal
- Detects desktop AI apps by name: ChatGPT, Claude, Midjourney, Ollama, ComfyUI and 130 total app recognitions
| - AI detection with 99.9% accuracy
- Sentence-by-sentence highlighting of AI-generated text
- Writing Replay showing video proof of writing process
- Plagiarism detection
- Grammar checking and writing feedback
- Chrome extension for browser-based scanning
- Integration with Canvas and Google Classroom
- API for developer integration
- Detects multiple AI models including GPT-5, GPT-6, Gemini, and Claude
- AI Tutor for writing improvement
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| What makes it different | - Never looks inside files, only records process
- Certificate stays valid forever, even if subscription is cancelled
- Checking certificates is always free, no account needed
- Discloses AI tool usage honestly instead of pretending it wasn't used
- Uses third-party RFC 3161 timestamp authority so time is independently verified
| - 99.9% accuracy rate verified by independent benchmarks from Penn State's AI Research Lab
- De-biased for ESL learners with only 1% false positive rate for non-native English writing
- Only detector with Writing Replay showing video proof of authentic writing process
- Trusted by over 10 million users and 100+ organizations globally
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ▼ −1 (down) since last check | 81 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 27 |
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| Citation Flow (Majestic) | 19 | 43 |
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| Referring domains (Majestic) | 24 | 8387 |
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DrawDog
GPTZero