Google’s artificial intelligence (AI) app Gemini has surpassed the milestone of 1 billion monthly users, marking rapid growth for the company’s AI service. Google CEO Sundar Pichai announced the milestone in a post on social media platform X, saying Gemini had become the fastest Google service to cross the 1 billion-user mark. According to Pichai, 1 billion people now use the Gemini app every month, making it the 14th Google service to reach the milestone. With the achievement, Gemini has become the world’s second-most popular AI assistant after ChatGPT, which reached 1 billion monthly users in June 2026. Despite Gemini’s rapid growth, Google continues to face strong competition in the AI sector from OpenAI, Anthropic and other companies.