Apptopia data shows ChatGPT's US market share fell from 69.1% to 45.3% between January 2025 and January 2026, while Google's Gemini rose from 14.7% to 25.1% and xAI's Grok jumped from 1.6% to 15.2%.
According to data from Apptopia, ChatGPT's US market share in the AI chatbot space has declined significantly over the past year, dropping from 69.1% in January 2025 to 45.3% in January 2026. This represents a 24-point decrease in market share over a 12-month period.
During the same timeframe, Google's Gemini saw substantial growth, increasing its market share from 14.7% to 25.1%. Meanwhile, xAI's Grok experienced explosive growth, rising from just 1.6% to 15.2% market share.
The data suggests a shifting landscape in the AI chatbot market, with users exploring alternatives to ChatGPT. This trend coincides with increased competition and the launch of new AI products from major tech companies.
For context, these figures represent US market share specifically and reflect the changing dynamics in consumer adoption of AI chatbot technologies over the past year.
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