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OpenAI’s ChatGPT Share Drops Below 50%, Claude Gains Paid Users

6/17/2026

42 4 Full Breakdown

Summary

Story summary

OpenAI’s ChatGPT market share fell to 46.4% by end-May 2026, dropping below 50%.
Google’s Gemini held 27.7% and Anthropic’s Claude 10.3% in the same period.
OpenAI added ads to ChatGPT in February 2026, and by May 17% of daily users saw them.
Claude converts 13% of its 245 million users to paid plans, after a $200 million DoD contract in February triggered a spike in ChatGPT uninstallations.

History

Historical Context

Google launched AdSense in March 2003 after acquiring Applied Semantics, quickly becoming a core revenue stream that earned $3.4 billion in Q1 2014 (22 % of total revenue). As AI chatbots like Gemini entered the market, Google faced regulatory pressure—including a €270 million French fine in 2024—prompting the firm to broaden AI-related services and diversify income sources.

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Story summary

OpenAI’s ChatGPT market share fell to 46.4% by end-May 2026, dropping below 50%.
Google’s Gemini held 27.7% and Anthropic’s Claude 10.3% in the same period.
OpenAI added ads to ChatGPT in February 2026, and by May 17% of daily users saw them.
Claude converts 13% of its 245 million users to paid plans, after a $200 million DoD contract in February triggered a spike in ChatGPT uninstallations.

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