Breaking

ChatGPT's Global Share Drops Below 50% for First Time, to 46.4%

June 16, 2026 at 06:34 EDT

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According to Sensor Tower's "State of AI Report 2026," OpenAI's ChatGPT slipped below 50% of the global AI assistant market for the first time, falling to 46.4% by the end of May 2026. The figures were reported by TechCrunch on June 16, 2026. ChatGPT had held above 50% until January 2026 before declining over the following months.

May 2026 · State of AI Report

ChatGPT slips below 50% market share for the first time

Still the world's most-used AI assistant at 1.1B+ monthly users — but its share fell to 46.4% as Gemini, Claude and others turn the market multipolar.

46.4%

ChatGPT share at end of May — first time under 50%

1.1B+

Monthly active users — still the largest in absolute scale

$4.2B

AI app spending in H1 2026, up from $1.83B a year earlier

Who holds the market — end of May 2026

Share of the AI assistant market, drawn to scale

46.4%

ChatGPT

27.7%

Gemini

10.3%

Claude

<5%

Grok · Perplexity · DeepSeek · Meta AI

Monthly active users

ChatGPT1.1B+

Gemini662M

Claude245M

Where rivals gain

Claude's 13% paid-conversion rate ranks among the highest in the industry, and it is gaining prominence in enterprise use. Gemini rides integration across Google search and services.

Why the lead is contracting

A multipolar market

Users increasingly switch between assistants, and developers adopt multi-LLM strategies that match models to tasks — reducing reliance on any single tool.

Brand sensitivity

Reports note a surge in ChatGPT app uninstalls following OpenAI's US Department of Defense contract — a signal of user sensitivity to brand and ethics.

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