Retail media optimization platform Quartile announced on September 21, 2026 that it has become a technology partner supporting advertising in ChatGPT, giving participating advertisers access to ChatGPT Ads through Quartile’s existing tools and workflows. In the release, datelined New York, Quartile, which describes itself as the world’s largest retail media optimization platform, said the partnership expands its AI-powered advertising capabilities into conversational discovery. The company said…