ChatGPT Ads opened its multi-image ad format to all advertisers in open beta

OpenAI told advertisers that multi-image ads are now available to everyone in open beta, having previously been limited. The format sits alongside single-image ads in Ads Manager for standard campaigns.

OpenAI's help centre documents the open beta as starting Monday, October 26, 2026, and says multi-image ads take four to six square images at a 1:1 aspect ratio, that every image links to one shared destination, and that 'Learn more' is currently the only call-to-action option. Both formats are available for standard campaigns with Reach, Clicks or Conversions objectives and follow the same headline and description requirements.