5. Platforms by AI channel

ChatGPT, Google AI Overviews, Perplexity, Claude, Gemini — they all go by the name AI search engines, but they work fundamentally differently. A strategy that has impact on one platform isn’t automatically effective on another. This cluster makes the difference concrete.

Per platform you’ll learn how retrieval works, which signals carry the most weight, and which tactics have the most impact potential. The cluster closes with a consolidated overview across four dimensions: highest impact, the critical factor, and observability.

→ Prioritise based on your audience: for broad consumer reach, start with Google AI Overviews; for professional users, Perplexity is the most transparent.

Platform landscape map: AI platforms positioned on training data vs live retrieval and source transparency A 2D quadrant with on the horizontal axis 'training-data-heavy' versus 'live-retrieval-heavy' and on the vertical axis 'low source transparency' versus 'high source transparency'. Eight AI platforms are positioned: Claude (bottom-left, training-only, no source attribution), ChatGPT (lower-middle, hybrid with optional browse), Gemini (lower-right, hybrid), Mistral Le Chat (upper-right, live with citations), Perplexity (upper-right, strongly live with citations), Google AI Overviews (upper-right, integrated with Search), You.com (upper-right, live with citations). Low transparency + training-heavy Live retrieval with source attribution Pure LLM, no visible sources Hybrid retrieval, light sourcing Training-data-heavy Live-retrieval-heavy how does the platform retrieve answers? High source transparency Low source transparency Claude Anthropic ChatGPT OpenAI Gemini Google Perplexity live + citations AI Overviews Google Le Chat Mistral You.com established large players retrieval-first with explicit source attribution