| What it does | Test and guard AI agents with outcome verification, not reply verification
| 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 | IT
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| Pricing model | Freemium
| Free
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| Pricing | Free: €0/month with 100 test runs per month; Test: €19/month with 2,000 runs per month; Guard: €99/month with unlimited runs plus live guard features. AI usage is metered separately at cost.
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| Key features | - Isolated sandbox with fresh fake accounts for testing
- 88 scenario templates for refunds, cancellations, pauses and plan changes
- CI gate and CLI with dependency-free deployment
- Policy gate with ALLOW/REVIEW/HOLD/DENY decisions
- Human approval for risky actions
- Independent verification of outcome against ground-truth state
- Guardrails with prompt injection and PII detection
- Per-end-user spending caps in rolling windows
- Append-only evidence log with JSON, CSV and PDF export
- GitHub Action integration for automated testing
| - 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 | - Deterministic verdicts from explicit state checks, not language model decisions
- No-cost deterministic testing; AI features are optional and separately metered
- Integrated sandbox testing and production guarding in one platform
- Idempotent and exactly-once action execution with retry safety
| - 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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COLVO
ChatZero