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AI search visibility: why most brands can’t measure it

Your customers now ask AI which brands to trust. Most marketing and digital teams have no idea what it tells them.

By the Tonic The Agency team

Illustration of a phone showing an AI assistant answer with a missing brand, surrounded by search, chat and analytics icons

In this guide

  1. The problem
  2. Why it’s so hard to measure
  3. When we meet
  4. Selected work
  5. FAQs
  6. Further reading

Buyers are changing how they choose. They ask an AI assistant which agency, supplier or product to pick – and get a handful of names, not ten blue links. If your brand isn’t in that answer, you may never be considered. That’s why AI search visibility now matters as much as ranking in Google.

Yet most organisations have no reliable way to see what those answers say. Leadership asks what ChatGPT thinks of the brand; marketing has no clear reply. Competitors appear in answers for reasons nobody can explain. And the content, SEO and PR the team is investing in may or may not be changing anything.

Definition

What is AI search visibility?

AI search visibility is how often AI assistants – such as ChatGPT, Gemini, Perplexity and Google’s AI Overviews and AI Mode – mention or link to your brand when people ask questions related to what you do. It’s also called LLM visibility, and improving it is often called generative engine optimisation (GEO).

The problem

Side note: this guide uses “AI answers” to mean responses from ChatGPT, Gemini, Perplexity and Google’s AI Overviews and AI Mode.

Five questions most teams can’t answer

  • Does AI mention us when customers ask about what we do?
  • Which competitors does it recommend instead?
  • Which websites is it relying on to describe us?
  • Is anything it says about us wrong, or out of date?
  • Are our website, content and PR changes making any difference?

If you’re not in the answer, you’re not in the shortlist.

Why it’s hard

Why AI search visibility is so hard to measure

AI visibility is easy to talk about and surprisingly hard to pin down. Four things get in the way.

What you seeWhat’s usually behind it
“Last month we were in the answer – now we’re not.”Answers move. Ask the same question twice and you can get a different answer, so a single check proves very little.
“We show up in ChatGPT but not in Google’s AI Overviews.”Platforms disagree. Each draws on different sources and updates at different times.
“When we ask about our brand, AI knows exactly who we are.”Branded questions flatter. The questions customers really ask may not mention you at all.
“We’ve got the numbers – but nobody knows what to do with them.”Numbers without a plan. Data rarely says which content, website or PR changes would move it.

Figure 1

One question, four platforms: “Which agencies in Sydney build enterprise websites?”

Google AI Overview

  1. Agency A
  2. Agency D
  3. Agency F

ChatGPT

  1. Agency B
  2. Agency A
  3. Your brand

Gemini

  1. Agency C
  2. Agency E
  3. Agency A

Perplexity

  1. Agency D
  2. Agency B
  3. Agency G
Figure 1. An illustrative example of how the same buyer question can produce different shortlists across AI platforms. Not real results.

When we meet

Where a conversation with us starts

Every brand’s starting point is different, which is why we begin by talking rather than prescribing. In a first conversation we’ll look together at:

  • What AI says about you now – a first look at a few of your customers’ real questions.
  • The questions that matter – which questions and platforms are worth tracking for your business.
  • How we’d measure it – how a consistent benchmark would work for your team.
  • Where to start – the areas most likely to make a difference.
Book a conversation

Search and website work.

AI search visibility FAQs

What is LLM visibility?

LLM visibility is whether large language model assistants such as ChatGPT, Claude and Gemini know about your brand and mention or cite it in their answers. It overlaps with AI search visibility, which also covers AI features inside search engines, such as Google’s AI Overviews.

What is generative engine optimisation (GEO)?

Generative engine optimisation (GEO) is the practice of improving how often and how accurately your brand appears in AI-generated answers. It builds on SEO, but also depends on how clearly your own site describes you and how consistently other trusted sources describe you too.

Why might my brand appear in ChatGPT but not Google’s AI Overviews?

Because each platform draws on different sources. Google’s AI Overviews lean heavily on pages that already rank in Google Search, while ChatGPT combines what its model learned in training with live web results. Visibility often differs between platforms, so it needs to be measured on each one.

How long does it take to improve AI search visibility?

Usually months rather than weeks. It depends on your starting point, how much clear, quotable content you publish and how consistently other sources describe your brand. Some platforms reflect changes quickly; others only when their underlying models or indexes update.

Guides. Further reading

Thinking it through? Start here.

All guides

Work with us

Want to know what AI says about your brand?

Tonic The Agency is a full service independent agency in Surry Hills, Sydney, founded in 2010. Talk to us and we’ll take a first look together.

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