ChatGPT bleeds market share as Claude posts explosive monthly growth

THE DECODER / 4/18/2026

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Key Points

  • Claude’s market share more than doubled within a single month, allowing it to overtake Deepseek and Grok.
  • ChatGPT remains the overall leader, but the article says it is rapidly losing ground to competitors.
  • Google Gemini is highlighted as a key driver of the shift, reportedly capturing about a quarter of all AI traffic.
  • The piece contrasts these trends with OpenAI’s claim of record user and sales figures.
  • The article frames these movements as evidence of fast-changing competitive dynamics among major AI chatbots.

The Chinese AI chatbot Deepseek is recording impressive user growth, but is lagging far behind the market leader ChatGPT. Meanwhile, OpenAI reports record figures for users and sales.

Claude doubles its market share in a single month, jumping past Deepseek and Grok. ChatGPT still leads the pack but is losing ground fast, especially to Google Gemini, which now captures a quarter of all AI traffic.

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