| What it does | Open-source AI security verification
| Most accurate AI detector for identifying ChatGPT, GPT-5, Gemini and other AI-generated content
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| Stage | Not given
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| Founded | Not given
| 2022
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| Based in | Not given
| CA
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| Pricing model | Open source
| Freemium
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| Pricing | Not given
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| Key features | - Scan model and code artifacts offline
- Probe and monitor live endpoints
- Grade recorded application runs
- Diff and compare security runs
- 58 security rules across build and runtime
- Python API for integration
- Custom rule creation with YAML or Python
- Cost estimation before probing
- Optional self-hosted collector
| - AI Checker - detect ChatGPT, GPT-5, Gemini, Claude, Grok and other AI writing tools
- Plagiarism Checker - identify plagiarism and duplicated content
- Writing Replay - shows authorship and writing process in browser extension
- Chrome Extension and Google Docs integration
- Moodle plugin for academic integrity checking
- Fact & AI Hallucination Checker
- Grammar and Spelling Checker
- Readability Checker and Content Quality Score
- API access for developers and integrations
- Bulk Scan for multiple texts at once
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| What makes it different | - Fully offline artifact scanning with no telemetry or account required
- Unverified results never marked as clean; handles uncertainty explicitly
- Works with multiple model APIs and MCP servers regardless of model
- Re-grade recorded runs without rerunning the application
| - Proven accuracy in peer-reviewed third-party studies
- Trained on adversarial data to detect AI paraphrasing attempts
- Writing Replay feature proves human authorship
- Multi-product platform with plagiarism, grammar, fact-checking and readability tools
- Enterprise security with military-grade 256-bit encryption
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 2 ● no change since last check | 79 ● no change since last check |
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| Trust Flow (Majestic) | 2 | 24 |
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| Citation Flow (Majestic) | 21 | 49 |
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| Referring domains (Majestic) | 22 | 7344 |
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Guardana
Originality.ai™