LLMO Prompt Tester - Test Your Content Against AI Search Engines

Free LLM optimisation tool. Simulate how AI search engines like Perplexity, ChatGPT, and Google AI Overviews handle your content. Get a citation likelihood score and actionable improvements for LLM optimisation (LLMO).

How It Works

  1. Paste your content into the tester. Add a target query that a user might ask an AI search engine.
  2. We run 3 AI simulations using different prompt styles: Search Assistant (Perplexity style), Research Helper (deep analysis), and Answer Engine (AI Overviews style).
  3. Get your citation score with per-variation analysis, highlighted content matches, and specific improvements to make your content LLM-friendly.

What This LLMO Prompt Tester Analyses

This tool scores your content across five dimensions: Content Authority (expertise and data), Structural Clarity (headings, lists, scannable format), Information Density (specific facts vs. generic filler), Unique Value (original insights not found elsewhere), and Query Alignment (how directly the content addresses the question). Results are tested across three prompt variations for consistency.

Frequently Asked Questions

What is LLMO (Large Language Model Optimisation)?

LLMO is the practice of optimising web content so that large language models (like ChatGPT, Perplexity, Claude, and Google Gemini) are more likely to cite, quote, or reference it when answering user queries. It focuses on content structure, information density, authority signals, and query alignment rather than traditional ranking factors.

How does this LLMO prompt tester work?

You paste your content and a target query. The tool runs three different AI prompt variations (Search Assistant, Research Helper, and Answer Engine) to simulate how different AI search products would handle your content. It then analyses whether each variation cited, paraphrased, or ignored your content, and provides a citation likelihood score with specific improvement suggestions.

What is LLM citation likelihood?

LLM citation likelihood measures how probable it is that an AI search engine will reference your content when answering a related query. Factors include content authority, structural clarity, information density, unique value, and query alignment.

Is this tool free?

Yes. Paste your content and a target query to receive a full analysis at no cost. No login required.