The era of monopoly is over: ChatGPT’s share of the AI market has fallen below 50% for the first time
17 June 15:28
ChatGPT’s share of the artificial intelligence market has fallen below 50% for the first time, as users have begun to favor other language models, such as Gemini, Claude, and Grok.
This is according to the “State of AI Report for 2026” from analytics firm Sensor Tower, as reported by TechCrunch and cited by "Komersant Ukrainian".
ChatGPT was previously the market leader, reaching 1 billion monthly users faster than any other service in history.
In February, the number of weekly users reached 900 million.
Although ChatGPT remains the most popular language model with over 1.1 billion monthly users, its market share fell to 46.4% by the end of May.
This occurred amid the rising popularity of Gemini (27.7%) and Claude (10.3%). Other language models, such as Grok, Perplexity, DeepSeek, and Meta AI, account for less than 5% of the market.
New Players in the Market
Gemini
Gemini’s growth is largely driven by its integration with Google’s ecosystem of tools, making it an attractive choice for many users.
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Claude
Claude, developed by Anthropic, has gained popularity thanks to use cases that boost productivity. Its user retention rate is approaching that of ChatGPT.
Impact of External Factors
Some users lost trust in ChatGPT after OpenAI signed an agreement with the U.S. Department of Defense in February.
In addition, the introduction of ads in ChatGPT in February—which reached 17% of daily users by May—may also have affected the model’s popularity. The main categories of advertisers were software, shopping, media and entertainment, as well as food and restaurants.
In June, OpenAI filed for a record-breaking initial public offering, which could value the company at over $1 trillion. This comes amid competition with Anthropic to go public on Wall Street.
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