New York, NY, August 6, 2026—ChatGPT leads U.S. AI brand Preference among recent generative AI users, according to YouGov’s new U.S. AI brand rankings. Key findings include:ChatGPT leads AI brand Preference: Among U.S. adults who have used generative AI in the past 30 days, 33.7% say ChatGPT is the AI tool they prefer using most. Gemini posts the biggest Preference gain: Gemini’s Preference score increased 6.8 percentage points between February and July 2026, the largest gain among eligible AI brands. Gemini’s Preference score increased 6.8 percentage points between February and July 2026, the largest gain among eligible AI brands. AI preferences differ by type of worker: ChatGPT’s Preference score is 10.9 points higher among knowledge workers than frontline and operational workers.