ChatGPT and Copilot have begun to lose market share to rivals, particularly Gemini, in the US, according to two independent estimates.
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The share of ChatGPT in the United States decreased from 69.1% in January 2025 to 45.3% in January 2026, which represents a massive decrease for an interval of only one year, writes News.ro.
Copilot, Microsoft's AI based on models developed by OpenAI, has also lost market share, according to Recon, which tracked subscription payers' first option. It will have 18.8% of the market in July 2025, so that in January it will only have 11.5%.
Gemini AI, developed by Google, has grown a lot in the past year: according to Apptopia, from 14.7% to 25.1%, and Recon data shows an increase from 12.8% to 15.7%.
And Grok, Elon Musk's AI, rose from 1.6 percent to 15.2 percent, according to Apptopia.
After initial success, ChatGPT seems to be losing ground to new competitors, with Gemini gaining popularity after version three and Grok going viral through controversial images.
In November 2025, Google launched the Gemini 3 model, in a move designed to accelerate the race with OpenAI, the creator of ChatGPT.
Google says Gemini 3 is designed to better understand user intent and provide genuine insight, avoiding standard wording and overly flattering answers. Existing AI models will be kept for simple tasks.
