Google's Gemini nears 1B users as ChatGPT share falls below 50%

Google's Gemini has emerged as a serious competitor in the AI assistant market, growing to 950 million monthly users by Q2 2026 and capturing 27.7% of the AI assistant market share. The tripling of Gemini's user base year-over-year reflects the company's aggressive feature rollout strategy, with Alphabet CEO Sundar Pichai describing the pace of new launches as "incredible." Notably, Gemini's growth occurs alongside a decline in ChatGPT's dominance: for the first time, according to Sensor Tower's H1 2026 analysis, ChatGPT's market share fell below 50%, suggesting the competitive landscape is fragmenting as users evaluate multiple AI assistant options.

Geographically and across platforms, Gemini has built strength in unexpected places. While the Android ecosystem naturally favors Google's product, the iOS app has accumulated over 137 million downloads in just 12 months, indicating that iPhone users are actively choosing Gemini despite Apple's preference for its own AI features. The introduction of the Nano Banana image generation model specifically for iOS shows Google's deliberate strategy to compete on Apple's platform. Concurrently, Google's Q&A-style AI mode in search crossed 1 billion users, suggesting that AI integration within Google's core search product is complementing, rather than cannibalizing, standalone assistant adoption.