ChatGPT's market share slips below 50%
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ChatGPT's market share slips below 50%

Fast Company··16 Jun

Fast Company was blocked, but fallback reports citing Sensor Tower said ChatGPT's AI assistant market share fell below 50% for the first time in March 2026 as Gemini, Claude and other rivals gained users.

Prism

What It Means For You

  • AI users now have stronger alternatives to ChatGPT for everyday tasks.
  • Gemini's growth is helped by Google's Android and product ecosystem.
  • Claude is gaining traction among productivity and enterprise users.

What's Happening

  • ChatGPT's share reportedly fell below 50% for the first time.
  • It still remains the most popular AI assistant worldwide.
  • Gemini and Claude are the main challengers gaining share.

Market Data

  • Sensor Tower's State of AI 2026 report tracked cross-platform audience share.
  • ChatGPT became the fastest app to reach 1 billion monthly active users.
  • Other rivals include Grok, Perplexity, DeepSeek and Meta AI.
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