Agencies & Marketing — OpenAI Launches CPC Ads and Self-Serve Ads Manager in ChatGPT, Creating a New Performance Channel; YouTube Carves Out Audio-First Ad Inventory; Platforms Diversify Beyond Traditional Formats

Agencies & Marketing · 2026-04-23

TODAY'S SIGNAL — The ad industry's center of gravity is shifting fast across two axes: new platforms and new formats. OpenAI's dual move — introducing CPC ads in ChatGPT and testing a self-serve Ads Manager — is the week's most consequential development, signaling that conversational AI is no longer experimental territory but an emerging performance channel with measurable ROI mechanics.…