[DEVELOPING] AI-search monetization advances: Google tests conversational ad formats, OpenAI tests ChatGPT ads
Google is testing Gemini-powered conversational ad formats across AI Mode and Search and embedding commerce directly into Gemini as AI Mode passes one billion monthly users, while OpenAI has begun testing ads in ChatGPT for non-subscribers. The push comes as Big Tech AI capex is projected to reach a record $650B in 2026, raising pressure to convert engagement into advertising and commerce revenue. Paid-search click-through data shows meaningful erosion where AI answers appear, pushing marketers toward answer-engine and generative-engine optimization across ChatGPT, Gemini, Perplexity and AI Overviews.