CMO TLDR: ChatGPT, Spotify, and the Incrementality Imperative
AI Ad Economy
ChatGPT Ads Go Live, and They're Everywhere
OpenAI is now serving ads on roughly one in five free-tier queries in the US, with targeting driven by conversation topic, chat history, and user memory. The format introduces a "poaching" dynamic where competitor brands can appear against branded queries, echoing a proven search advertising tactic now migrating to AI. With expansion planned for Canada, Australia, and New Zealand, the rollout signals that AI-powered ad inventory is becoming real, even as OpenAI CEO Sam Altman called ads "a last resort" just two years ago.
The ChatGPT Ad Machine Is Scaling Fast
A deep dive into ChatGPT's ad rollout confirms the format appears as a clickable website link button at the bottom of responses, always tailored to the user's prompt. Travel queries trigger the highest ad frequency, with Booking.com among the first to capitalize on location-aware placements. Neither Google's Gemini nor Anthropic's Claude currently runs sponsored placements, leaving OpenAI as the first mover in conversational AI advertising, a market that Columbia Business School's Olivier Toubia calls a "huge multibillion-dollar" opportunity.
Programmatic
Spotify's Ad Exchange Triples Its Advertiser Base, but Buyers Want More
Spotify's SAX ad exchange has grown its monthly active programmatic advertisers by 222% in its first year, with the platform now accessible through nearly 50 DSPs, including DV360, Yahoo DSP, and, as of October, The Trade Desk. New features rolling out this week include automated bid adjustments and creative split testing, alongside upcoming ad formats like sponsored playlists and swipeable carousel units. Agency buyers compare audio's current trajectory to CTV several years ago: showing up on more media plans, but still waiting for the budget prioritization to match.
The Trade Desk Rewrites Identity Alliance Payouts Around Incrementality
The Trade Desk is overhauling compensation for its Identity Alliance partners, shifting from a volume-based model to one that rewards the incremental value of unique identity signals. Under the new framework, expected to fully take effect in Q2, data providers contributing duplicative signals will see reduced payouts while those offering differentiated data earn more. The shakeup, estimated to involve tens of millions of dollars annually, adds to growing partner scrutiny of The Trade Desk's rising take rate, which hit a record 21.6% in its most recent quarter.
Streaming & CTV
Walmart Vizio's CTV Pitch Hits an Incrementality Wall
More than a year after closing its Vizio acquisition, Walmart unveiled plans at the IAB NewFronts for a unified account login that would connect Walmart shopper data to Vizio's smart TV footprint, promising closed-loop measurement for CTV advertisers. Early results are mixed: Walmart reports a median viewing rate of 44% for CTV campaigns on Walmart Connect, but at least one brand, Georgia Pacific, walked away after the platform couldn't deliver the incrementality proof it needed. The gap between Walmart's "connected commerce at scale" vision and advertiser demands for rigorous attribution remains the deal's biggest unresolved challenge.
Quick Links
Jones Road Beauty Bets on Causal MMM to Replace the Measurement Patchwork
Jones Road Beauty CEO Cody Plofker is partnering with measurement startup Haus on a new approach called Causal MMM, which anchors media mix models in the results of real experiments rather than historical correlations. The method already delivered a sobering finding: Meta was still incremental for Jones Road, but the brand was overspending, with much of the attributed revenue coming from returning customers rather than new acquisitions. For CMOs drowning in conflicting signals from platform reporting, MTA vendors, and geo lift tests, the case for experiment-driven measurement is becoming harder to ignore.
Yahoo Moves Downmarket With DSP Performance Push
Yahoo is building AI-powered tools within its DSP to attract mid-market, performance-focused advertisers, hiring a dedicated team with salaries up to $473,710 to lead the effort. The move targets the e-commerce and DTC brands that rivals like DV360 and The Trade Desk have long dominated, leveraging Yahoo's lower fee structure and the advertiser defections from TTD that boosted its enterprise business last year.