Open a responsive search ad (RSA) for editing and click the Generate with AI button in the modal. The AI analyzes the ad's website and your business context to suggest new headlines and descriptions within Google's character limits. The suggestions appear in a list with checkboxes: select the ones you like and add them to the ad with one click. You can still edit the text before saving. You stay in control: nothing is published until you click Save in the edit modal. This feature only works on RSAs, the editable format in Search campaigns.