Observed Signal · Jun 25, 2026 · Product Launch · Source: Adzine · Impact: 3/5 · Sentiment: Positive
Criteo Expands Ads Inside ChatGPT
Criteo is scaling its advertising integration with OpenAI’s ChatGPT, reporting over 2,000 brands buying ChatGPT inventory via Criteo (up from ~1,000 in May). The offering, bookable through Criteo’s self‑service platform, is available in the US, Australia, Canada, New Zealand, the UK, Japan and South Korea; continental Europe has no start date yet. Criteo introduced “Prompt Smart Ads,” which combine catalog and commerce signals with the user’s query to tailor ads and product descriptions; early tests show increased budget delivery and roughly fourfold higher spend after activation. The company reports ChatGPT ad traffic with 2–3x higher click‑through rates and conversion rates that beat other referral channels, with over 80% of ad-driven ChatGPT traffic coming from new customers. Criteo also highlighted a Retail Media use case with Albertsons that embeds sponsored products into a conversational, AI-driven shopping experience.
Expands ad inventory and new ad formats into LLM-driven conversational interfaces, with early performance signals that could shift retail media and commerce advertising toward AI chat environments; relevant to advertisers, retail media networks and AdTech vendors.
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Key Takeaways & Evidence Grounding
- Criteo reports more than 2,000 brands are buying advertising in ChatGPT via its integration with OpenAI (up from ~1,000 in May).
- ChatGPT ad inventory via Criteo is available in the US, Australia, Canada, New Zealand, the UK, Japan and South Korea; continental European markets (e.g., Germany, France, Italy, Spain) have no start date yet.
- Criteo enables booking of ChatGPT inventory through its self‑service platform.
- Criteo introduced 'Prompt Smart Ads' that use catalog data, commerce signals and the user query to tailor ads; early tests show about fourfold higher spend after activation (described as higher budget delivery).
- Criteo states ChatGPT ad traffic delivers 2–3x higher click‑through rates versus comparable formats, higher conversion rates than other referral channels, and that over 80% of ad-driven ChatGPT traffic comes from new customers.
Connected Companies & Entities
3 Entities mapped“Der Adtech-Anbieter meldet pünktlich zum Kreativfestival Cannes Lions für seine Integration mit OpenAI inzwischen mehr als 2.000 Marken, die...”
“Zunächst ging es darum, kommerzielle Inhalte in ChatGPT Free und ChatGPT Go einzubinden. Criteo fungiert dabei als Technologiepartner zwisch...”
“Criteo nennt einen aktuellen Beitrag des Unternehmens zur Supermarktkette Albertsons, wo Sponsored Products in eine KI-gestützte konversatio...”
Ontology Mapping & Concepts
Related Market Signals & Shifts
Recent verified developments and strategic activity across this market segment.
ChatGPT Ads Launch: Criteo Partners with OpenAI
Criteo has partnered with OpenAI to sell advertising placements inside ChatGPT, joining a pilot test of chatbot ads that OpenAI began rolling out to its Free and Go tiers. Agencies including Dentsu, Omnicom and WPP are participating in the pilot on behalf of clients; Criteo is the first adtech company to join the test. Criteo says its observations across 500 U.S. retailers in February found shoppers referred from chatbots are 1.5x more likely to purchase. The company said its integration with ChatGPT will roll out in the coming weeks. OpenAI began showing ads in ChatGPT on Feb. 9 and requires brands to pay a minimum of $200,000 to test placements.
OpenAI Taps Criteo to Add Programmatic Ads in ChatGPT
OpenAI has named Criteo its first ad tech partner, integrating Criteo’s programmatic network into an ad pilot inside ChatGPT. The deal connects Criteo’s roster of roughly 17,000 advertisers (about $4 billion in annual media spend) into the ad experiment OpenAI began testing on February 9 in the Free and Go tiers in the US. OpenAI reportedly seeks a minimum brand commitment of $200,000 to participate, while Criteo cites internal data showing LLM-sourced traffic converts 1.5× better than other referral channels. The pilot already includes major agency clients such as WPP, Omnicom and Dentsu. Criteo frames the move under its “agentic commerce” strategy; OpenAI says it will evaluate brand participation while aiming to preserve user value and trust.
AI Chat Advertising Turns Discovery into Performance
In an interview, Laure Sauteraud describes how advertising inside LLM-driven chat experiences is emerging as a measurable performance channel. Criteo’s integration with OpenAI is not yet active in Germany or the EU but is available in the US, Australia, Canada, New Zealand, the UK, Japan and South Korea. The dominant format is “Prompt Smart Ads,” which adapts creatives and product descriptions to user queries. More than 2,000 brands already advertise in ChatGPT via Criteo, and Criteo reports that over 80% of ad-driven ChatGPT traffic originates from new customers. Sauteraud argues AI chat expands discovery earlier in the customer journey, enables deeper personalization from richer conversational context, and should be measured by standard business KPIs such as sales, ROAS, customer acquisition and incremental revenue.
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