ChatGPT's market share has fallen below 50% for the first time, according to Sensor Tower's 2026 State of AI Report. While still the most popular AI assistant globally with over 1.1 billion monthly users, its share dropped to 46.4% by May 2026 due to increasing competition from rivals like Google's Gemini and Anthropic's Claude. Users are showing a greater willingness to switch between AI assistants, with factors like brand trust and perceived values alignment influencing their decisions. AI
IMPACT Signals market maturation and increased user choice, pressuring established players to focus on value beyond scale.
RANK_REASON Market share data report showing a significant shift in a major tech product's dominance.
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- ChatGPT
- OpenAI
- Claude
- DeepSeek
- Gemini
- Grok
- Meta AI
- Perplexity
- Sensor Tower
- U S Department Of Defense
- xAI
- Anthropic
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