| What it does | Human evaluation for text-to-speech with blinded listening studies
| Detect AI-generated text from ChatGPT, Gemini, and Claude in seconds
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| Stage | Not given
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| Founded | Not given
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| Based in | US
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| Pricing model | Paid
| Free
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| Pricing | $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 | - 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
| - Sentence-level scoring and AI probability highlights
- Supports ChatGPT, Gemini, Claude, and other AI models
- DOCX and PDF file upload
- Instant 2-second analysis
- No signup required
- Paragraph rewriter with goal-driven rewrites
- Tone changer for multiple voice styles
- Grammar checker with multiple English variants
- Real-time results
- 98.7% detection accuracy
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| What makes it different | - 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
| - 98.7% detection accuracy with sentence-level highlights
- Combines detection, rewriting, tone changing, and grammar checking in one workspace
- No signup required for immediate use
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 10 ▲ +2 (up) since last check | 4 ▲ +1 (up) since last check |
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| Trust Flow (Majestic) | 9 | 4 |
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| Citation Flow (Majestic) | 24 | 15 |
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| Referring domains (Majestic) | 69 | 37 |
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Woodstitch
CheckAIContent