Prompt Gap
Also known as: Visibility gap
A prompt gap is a buyer question where your brand should appear in the AI answer but does not, while competitors do. Prompt gaps are the most actionable finding in an AI visibility audit, because each one is a specific, winnable opportunity rather than a vague score.
A prompt gap is a specific miss: a question your buyers ask an AI assistant, where the answer names competitors and leaves you out. It is the most useful thing an AI visibility audit produces, because unlike a score, a gap points at one winnable fight.
Why gaps beat scores
A visibility score of 34 does not tell you what to do. A list that says “you are absent from ‘best analytics tool for startups’ while three rivals are named” does. Prompt gaps convert a metric into a backlog. Prioritize them by intent: a gap on a buyer-intent prompt that shapes shortlists is worth far more than one on a trivial informational query.
How to close one
Each gap has a cause, and the fix follows the cause:
- No relevant page: publish answer-first content that directly answers the prompt.
- Weak authority: earn mentions and citations on the third-party sources the engine already trusts for that answer.
- Unclear entity: sharpen entity clarity so the model connects you to the category.
- Crawl problem: make sure AI crawlers can actually read the relevant page.
Work the list top down and re-check after each change. For method, see finding the prompts where you should appear and why your brand is not showing up in ChatGPT.
Frequently asked questions
How do you find prompt gaps?
Build a list of buyer-intent prompts, run each across the engines, and flag the ones where competitors are named and you are not. Those are your gaps, ranked by how much the prompt matters to your pipeline.
How do you close a prompt gap?
Diagnose why the engine picked competitors: is it a missing page, weak third-party authority, an unclear entity, or a crawlability issue? Then fix that specific cause, which usually means publishing the answer, earning a citation, or clarifying who you are.
Why focus on prompt gaps instead of the overall score?
A score tells you where you stand; a prompt gap tells you exactly what to do next. Working gap by gap turns a fuzzy visibility number into a concrete, prioritized to-do list.
See where you stand in AI answers
Rankry tracks how ChatGPT, Gemini, Perplexity, Claude and Grok mention and recommend your brand, then tells you what to fix.
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