| What it does | AI detector that identifies content generated by large language models
| Human evaluation for text-to-speech with blinded listening studies
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| Stage | Not given
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| Founded | 2023
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| Based in | Not given
| US
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| Pricing model | Freemium
| Paid
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| Pricing | 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.
| $18.00 per hour of audio heard by listeners; $0.30 per judgement on a pair of two 30-second clips; $300.00 for 200 pairs × 5 ratings with 30-second clips (1,000 judgements)
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| Key features | - 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
| - Blinded paired-preference studies with no system names visible
- API for creating studies and retrieving results
- Exact price quote before study starts
- Per-judgement data export as CSV
- Paid US-based listener panel
- Attention signals recorded with every judgement
- Live results streaming as listeners answer
- Detection template for AI vs human narration
- Published methodology and platform transparency
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| What makes it different | - 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
| - Publishes its own listening studies on the same platform with the same methodology as customer studies
- Forced-choice preference testing answers which system people prefer, not rating scales
- Fast turnaround with live result streaming and no minimum study size
- Transparent pricing with no setup fees or minimums, quoted before starting
- Customer audio stored securely and used only for that study
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 81 ● no change since last check | 8 ● no change since last check |
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| Trust Flow (Majestic) | 27 | 9 |
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| Citation Flow (Majestic) | 43 | 24 |
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| Referring domains (Majestic) | 8387 | 69 |
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GPTZero
Woodstitch