Criteo (NASDAQ:CRTO) shares rose 3% on Tuesday after the advertising technology company disclosed a wider deployment of its integration with OpenAI’s ChatGPT ad platform.
Company executives reported that upwards of 1,000 brands are now executing campaigns through Criteo’s ChatGPT connection, a mix of longstanding Criteo advertisers and newly onboarded marketers. The announcement follows OpenAI’s introduction of self-service ads for ChatGPT, which opened the conversational AI ad format to a larger pool of advertisers.
Criteo was the first ad tech partner to plug into OpenAI’s ChatGPT advertising pilot in March 2026. The firm said it is expanding access to the format through Criteo GO, its self-service product aimed at small and mid-sized businesses.
The company noted the integration has been rolled out to multiple international markets, specifically citing Australia, Canada, and New Zealand. Criteo said that budgets directed to ChatGPT placements have been incremental to existing media plans, with marketers viewing the channel as an additional discovery touchpoint rather than shifting spend away from established channels.
On performance, Criteo reported that click-through rates for ChatGPT ads are roughly three times those seen for comparable formats in other environments. Conversion rates for traffic driven from ChatGPT are said to be nearly double traditional search in several categories, including consumer electronics, lifestyle and wellbeing, and home and garden.
The company is seeing uptake from both holding companies and independent agencies that want to trial conversational AI inside existing media planning workflows. Criteo highlighted its work with specific brands in the pilot program, including Foot Locker Asia Pacific, HP, and Petbarn.
Looking ahead, Criteo emphasized that maintaining user experience is a priority as it integrates AI-native media into its cross-channel advertising stack. The company also pointed to scaling the partnership with OpenAI as a central focus as it broadens the program.
Clear summary: Criteo expanded its integration with ChatGPT, now supporting more than 1,000 brand campaigns and extending access via Criteo GO to small and mid-sized businesses while reporting materially higher engagement and conversion metrics; shares rose 3% on the news.