The AI search landscape is now far larger, more varied and more complex than a single platform. For a sound GEO strategy, it is essential to understand which systems exist, how they differ from each other, and which are relevant to your audience.
The main players
ChatGPT — OpenAI / GPT-4o
The most widely used generative AI platform globally. Combines training data with optional Bing integration. Dominant in consumer adoption. Answers are conversational and often miss explicit source attributions — but brands prominently present in training data are mentioned more often.
Google AI Overviews
Appears above organic results for informational and comparative queries. Pulls from Google’s index. Classic E-E-A-T signals play directly into ranking. Highest priority for organisations already invested in SEO.
Perplexity
Citation-first by design — every answer shows sources. Attracts a technically literate, research-driven audience. The most transparent platform for GEO measurement.
Claude — Anthropic
Growing fast in enterprise contexts. Strong at reasoning and synthesising. Relevant for complex, multi-step information queries in professional environments.
Gemini — Google
Integrated into Google Workspace and Android. Direct access to Google’s index. Growing importance for daily professional users.
Microsoft Copilot
Integrated into Microsoft 365 and Edge. Combines GPT-4 with Bing search. Relevant for enterprise environments in a Microsoft ecosystem.
Related in the hub
→ Want to know what works tactically per platform? Go to Cluster 5 — Platforms.