Gemini
Gemini is Google's family of large language models and the conversational AI product that exposes them — also the engine behind Google's AI Overviews and AI Mode in Search.
Why it matters
Gemini is uniquely consequential because it doesn't just power a standalone chat product — it feeds Google AI Overviews and Google AI Mode, which together touch the world's largest single search audience. Visibility in Gemini is visibility across most of Google's surfaces.
What it is
Gemini is Google's family of multimodal foundation models (Gemini 1.5 Pro, 2.0, 2.5, etc.) and the consumer chat product at gemini.google.com. The same models also power Google AI Overviews, Google AI Mode, and Gemini integrations across Workspace, Android, and Chrome.
The Google integration story
- Standalone Gemini — Direct chat product, replaces Bard.
- AI Overviews — Gemini-generated summaries above traditional Google results.
- AI Mode — Full conversational interface inside Google Search.
- Workspace — Embedded in Gmail, Docs, Sheets as Gemini-powered assistance.
- Android & Chrome — System-level assistant.
One brand description in Gemini's training and grounding can propagate across every one of these surfaces. That's the leverage — and the risk.
Why AEO measurement is hard for Gemini
Gemini answers vary materially by surface (chat vs AI Overview vs AI Mode), region, signed-in state, and Search personalisation. Capturing the consumer experience requires measurement that matches how real users access the answer, not just API calls.
Why it matters
Of the four major answer engines, Gemini has the deepest integration with Google's existing search dominance. For most brands, Gemini visibility correlates more tightly with overall AI-search traffic than any single other engine.
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