ChatGPT Ads Earn $0.89 Per Session, a Third of Google Search's $2.45

ChatGPT ads generate an average of $0.89 in revenue per session, roughly one-third of the $2.45 that Google Search ads deliver, according to early data from a paper by Maximilian Kaiser and Christian Schulze that remains under review. The figure anchors a week in which ad-tech earnings, agency politics and AI commerce all moved at once.

Why do ChatGPT ads underperform Google?

Reach is the first problem. Similarweb and Graphite data show that even in the UK, the market with the highest rate, ads reach just under 46% of eligible ChatGPT users. Frequency is the second. OpenAI says ads appear only when they are considered additive and relevant to a conversation, and never in conversations about sensitive topics.

The guardrails have not guaranteed quality. Paid ChatGPT traffic converts at 0.37%, compared with 1.17% for Google, per the paper's figures. For advertisers testing the channel, that gap means budgets must be sized to a funnel roughly a third as efficient as paid search — until reach and relevance improve.

What did Magnite report?

Magnite posted a 14% year-over-year revenue increase to $204.2 million in Q3, with connected TV revenue jumping 39% over the same period. CTV now accounts for 53% of the company's total revenue, a share that has grown steadily quarter after quarter.

The new signal this quarter is agentic AI. Magnite executives told investors the company is using agentic workflows to sell LG TV home-screen inventory. Agentic media buys can include formats not yet standardized for programmatic — home-screen ads, pause ads and smart TV tiles. CEO Michael Barrett pitched SpringServe, Magnite's ad server, as a programmatic and mediation platform that positions the company as "the operating system for CTV monetization." That strategy could pay off as more ad decisioning shifts to the sell side.

What is the WPP-Publicis feud about?

WPP CEO Cindy Rose criticized what she called "CEO handshake" account wins — deals landed without a pitch through CEO-to-CEO relationships that bypass the CMO. "I do not think we do ourselves any favor as an industry of professionals by encouraging clients to bypass proper due diligence," Rose told investors last week.

Rose never named Publicis, but the holdco's recent record fits the pattern: PepsiCo without a pitch, following Microsoft in April and LVMH's APAC account in September. Publicis rejected the characterization in an open letter published by Adweek, addressed "Dear Cindy." It read: "Claiming we win on a 'CEO handshake' is an insult to clients' intelligence," adding that clients "would never have entrusted us with a task of this magnitude on a wink and a handshake." Whatever the label, Publicis now owns those accounts and will answer if the work falls short.

What else moved this week?

• TikTok launched a standalone Shop app. (TechCrunch)
• Visa research finds AI agents still fail at completing purchases. (Fortune)
• Salon, publishing online since 1995, was suddenly shut down. (Salon)
• Good Good Golf's former marketing VP is suing the company for defamation after its ex-CEO blamed him for a controversial ad that cost the brand its Callaway sponsorship. (The Athletic)
• Through an Attain partnership, Amazon advertisers can now target shoppers at Walmart, Target and other retailers. (Adweek)
• Agentic commerce platform Firmly raised $15 million in Series A funding.
• Taboola pitched a "headless" agentic offering to agency buyers. (tipsheet.ai)

Who was hired?

LG Ad Solutions named Abhijit Pol as SVP of product and engineering.

With ChatGPT ad economics still at a discount, CTV monetization consolidating around sell-side platforms, and agency account wins increasingly decided above the CMO, the pressure this quarter falls on whether early AI-ad adopters and handshake-won accounts can both prove their numbers.