Which AI engine should we prioritise first?

Prioritise the engine your buyers already use to research. Start with the engine that sends measurable referral traffic or appears in customer conversations, then expand once a baseline exists for all five.

Does visibility in one engine carry over to the others?

Only partly. Engines share some sources but differ in retrieval, index freshness, and citation rules, so a brand cited constantly in one engine can be absent from another. Each engine needs its own measurement before you assume coverage.

Can we work on all five engines at once?

Yes, and most engagements do. The underlying work — retrievable content, entity clarity, third-party citations — compounds across engines. Engine-specific work is the layer on top, sequenced by which engine matters most to your pipeline.

How do we know an engine is worth the investment?

Measure first. An AI Visibility Audit scores your coverage prompt by prompt in every engine, so the investment decision is based on where you are absent against competitors rather than on which engine is in the news.

Engines

AI Search Optimization by Engine

Every AI engine retrieves, cites and recommends differently. ChatGPT, Google AI Overviews, Perplexity, Gemini and Copilot draw on different indexes, crawlers and ranking signals, so being visible in one says almost nothing about the others. Each engine has to be measured and optimised on its own terms.

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Five-engine visibility Live model

ChatGPT

AI Overviews

Gemini

Perplexity

Copilot

Your
brand

Citation coverage62%

Recommendation share34%

Competitor movement48%

One brand can produce five different visibility outcomes because each engine retrieves and cites differently.

How the five engines differ

Comparison of how each AI engine retrieves, cites and rewards content
Engine	How it retrieves	Cites inline?	Crawler	What moves visibility	Time to first citation
Copilot SEO	The Bing search index, retrieved live for each answer	Yes — linked sources listed under each answer	Bingbot	Bing indexing (IndexNow helps), structured data, and third-party citations	Days to weeks after Bing indexes the page
LLM SEO / ChatGPT SEO	Own web index plus live web search (partly Bing-backed) in ChatGPT Search	Yes — linked source chips and citations in search-enabled answers	GPTBot and OAI-SearchBot	Being indexed by Bing, crawlable pages, and brand mentions across the wider web	Typically weeks to a few months after indexing
AI Overviews Optimization	Google's main search index, grounded on pages that already rank organically	Yes — inline link cards to supporting pages	Googlebot	Traditional rankings, clear structure, and topical authority	Days to weeks once the page ranks in organic results
Perplexity SEO	Real-time web search over its own index plus partner indexes on every query	Yes — numbered inline citations attached to individual claims	PerplexityBot	Crawlability, direct question-and-answer formatting, and recency	Often days — retrieval is close to real time
Gemini SEO	Google Search grounding for fresh queries, plus its training data	Yes — links to sources when an answer is grounded in Search	Googlebot (Google-Extended controls training use)	The same signals as Google, plus clear entity and Knowledge Graph data	Days to weeks, tracking Google's index

Retrieval and crawler behaviour comes from each vendor's published documentation. Time to first citation is the typical range we observe in client audits — it depends on how quickly the underlying index picks up your content, and no vendor guarantees a timeline.

Engine-specific programs

Copilot SEO

Copilot SEO services for brands that need to be cited and recommended inside Microsoft Copilot and Bing AI experiences.

LLM SEO / ChatGPT SEO

An LLM SEO agency for ChatGPT SEO: we improve how large language models mention, cite and recommend your brand across ChatGPT and other AI assistants.

AI Overviews Optimization

AI Overviews optimization that gets your content selected as the cited source inside Google AI Overviews, with content, schema and entity work included.

Perplexity SEO

Perplexity SEO services that earn inline citations and brand mentions in Perplexity answers, with source mapping, answer-ready content and citation tracking.

Gemini SEO

Gemini SEO services designed to improve visibility across Google Gemini, AI Overviews, and AI search through technical SEO, content, schema, and digital PR.

Which engine to prioritise first

Related work

Ranking is no longer enough

You need to be cited, mentioned, and recommended.

Being cited, mentioned, and recommended are three different outcomes, and most brands only ever achieve the first one. Ranking is no longer enough because AI engines answer buyers directly and name only a short list of vendors as the recommendation — everyone else is cited in passing, if at all. Get a free AI Visibility Report to see exactly where your brand appears today across ChatGPT, Google AI Overviews, Gemini, Perplexity, and Copilot, where competitors are winning the recommendation instead, and what's keeping you from moving up the shortlist.

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