---
license: mit
task_categories:
- text-classification
- feature-extraction
- zero-shot-classification
tags:
- hallucination-detection
- brand-grounding
- aeo
- answer-engine-optimization
- ai-search
- fact-anchors
- c2pa
- eu-ai-act
pretty_name: Global Brand Hallucination & LLM Citation Benchmark
size_categories:
- 1K<n<10K
---

# 🛡️ Global Brand Hallucination & LLM Citation Benchmark Dataset

Official open dataset by [Pixel Office EU](https://pixeloffice.eu) tracking empirical brand hallucination rates, stale pricing quotes, and competitor deflection vectors across leading LLMs (**ChatGPT GPT-4o, Claude 3.5 Sonnet, Perplexity AI, Google Gemini 2.5 Flash, and DeepSeek V3**).

## 📊 Dataset Summary

* **Target Problem**: Autonomous AI purchasing agents and AI search engines frequently cite outdated pricing tiers, non-existent features, or deflect commercial queries to competitors when domains lack First-1KB Fact Anchors.
* **Findings**: Domains without structured First-1KB Fact Anchors suffer an average **68.4% hallucination or deflection rate** during commercial search queries. Inoculating pages with a 35ms First-1KB Fact Anchor reduces hallucination risk to **< 9.2%**.

## 📁 Data Fields

| Field | Type | Description |
|---|---|---|
| `domain` | string | The audited domain authority |
| `category` | string | Industry vertical (fintech, ecommerce, devtools, etc.) |
| `llm_tested` | string | Model evaluated (`gpt4o`, `claude35Sonnet`, `perplexity`, `geminiFlash`, `deepseekV3`) |
| `hallucination_detected` | boolean | True if the LLM hallucinated prices or terms |
| `hallucination_type` | string | Type of hallucination detected (`stale_pricing_tier`, `competitor_deflection`, `feature_hallucination`, `none`) |
| `ground_truth_pricing` | string | True official pricing on canonical website |
| `llm_hallucinated_quote` | string | What the LLM actually outputted |
| `risk_score_without_anchor` | int | Hallucination risk score (0-100%) before Fact Anchor injection |
| `risk_score_with_fact_anchor` | int | Hallucination risk score (0-100%) after 35ms First-1KB Fact Anchor |
| `anchor_injected` | boolean | Whether the domain had active Pixel Office Fact Anchors |
| `timestamp` | string | ISO-8601 audit timestamp |

## 🚀 Live Tooling & SDKs

* **NPM Package**: [`@pixeloffice-eu/firewall`](https://www.npmjs.com/package/@pixeloffice-eu/firewall) (`npx @pixeloffice-eu/firewall audit <domain>`)
* **PyPI Package**: [`pixeloffice-firewall`](https://pypi.org/project/pixeloffice-firewall/) (`pip install pixeloffice-firewall`)
* **Web Portal & Radar**: [pixeloffice.eu/showcase/brand-hallucination-firewall.html](https://pixeloffice.eu/showcase/brand-hallucination-firewall.html)
* **WordPress Plugin**: [pixeloffice-aeo v1.2.0](https://pixeloffice.eu)

## 📄 License & Attribution

MIT License. Maintained by [Pixel Office EU](https://pixeloffice.eu) & [Pixel Ventures](https://pixeloffice.eu/developer).