| What it does | Check AI agent replies against configured rules and verify signed records
| Free AI detector for ChatGPT, GPT-6, Claude and Gemini that scores text and highlights likely AI-generated sentences
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Freemium
| Free
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| Pricing | Free: local open-source checker, browser policy checks, six read-only MCP tools, regression export and offline verification. Managed Check API: $1 per 1,000 checked replies, USD, monthly usage billing through Stripe.
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| Key features | - Check agent replies against configured pricing, forbidden phrases, and action records
- Policy Check tool with browser interface for testing rules
- Model Context Protocol endpoint for Claude, ChatGPT and other MCP clients
- Offline verification with signed records and Merkle proofs
- Repair Lab for reproducing and fixing integration failures
- Managed Check API with pricing transparency
- MIT-licensed open-source local checker
- Framework connectors for LangChain and Vercel AI SDK
- MCP Chaos proxy for testing agent behavior
| - Sentence-level highlighting of AI-like text
- Paste text or upload files (.txt, .docx, .pdf)
- Detects patterns from ChatGPT, GPT-6, Claude, and Gemini
- No sign-up or account required
- Private text processing
- Minimum 50 words required for checking
- Identifies repetitive vocabulary and generic wording patterns
- Works in browser without installation
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| What makes it different | - Verifiable AI agent compliance without authorization or permission granting
- Evidence and records portable across platforms and models
- Transparent per-reply pricing with clear usage examples
- Open-source core with portable verification
| - Sentence-level highlighting shows exactly which parts appear AI-generated, not just a percentage
- Detects multiple AI models including ChatGPT, Claude, and Gemini
- Optimized for ChatGPT and newer GPT-6 style text
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 0 | 0 |
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| Referring domains (Majestic) | 0 | 0 |
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Curbi
ChatZero