| What it does | AI detector that identifies content generated by large language models
| Independent verification for AI agent outcomes
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| Stage | Not given
| Startup
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| Founded | 2023
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| Based in | Not given
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| Pricing model | Freemium
| Freemium
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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.
| Hobbyist: free forever with 250 checks/month; Pro: $9/month with 2,500 checks/month, $0.01 per extra check
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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
| - Independent outcome verification with VERIFIED, FAILED, or UNKNOWN status
- First-party adapters for Stripe, GitHub, Linear, Sentry, Resend, and HTTP endpoints
- MCP integration with Claude Code, Cursor, and any MCP host
- GitHub Actions required check that fails on unverified claims
- Audit trail storing claims, evidence, and verdicts separately
- Capability inspection before agents call tools
- Read-only credential access with AES-256-GCM encryption
- Continuous monitoring with watches every 5-10 minutes on Pro plan
- Evidence retention for 7 days on Hobbyist, 1 year on Pro
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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
| - Refuses to guess: returns UNKNOWN rather than false positives when evidence is unreachable
- Neutral gate between agent execution and success verification
- Runs the same way in production as in development
- Never needs write access, only reads authoritative state
- Structured audit trail for debugging and agent evaluation
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 81 ● no change since last check | 2 ● no change since last check |
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| Trust Flow (Majestic) | 27 | 1 |
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| Citation Flow (Majestic) | 43 | 23 |
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| Referring domains (Majestic) | 8387 | 14 |
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GPTZero
DidWork