Elon Musk’s AI bot Grok is ascending, jumping from 1.6% to 15.2% in market share among daily US users of chatbot apps from January 2025 to January 2026, according to mobile insights firm Apptopia.
The rise marks a furious entry into the chatbot app market for xAI, Musk’s AI company, which joined the race from a standing start in mid-2023. Grok now trails only ChatGPT and Gemini, and it’s gained ground on both in the past year. Meanwhile, Grok has passed Copilot, Perplexity, DeepSeek and Claude.
Grok’s growth story, however, isn’t completely clean.
Table of Contents
- The NSFW Tale Behind Grok's Growth
- Top AI Execs Embrace the 'Adult Mode' Era
- New IPO Plans Could Push xAI Beyond OpenAI
The NSFW Tale Behind Grok's Growth
The app surged in downloads at the start of 2026, right when news broke that the bot would generate undressed images of people upon request, including minors.
The download spike took the app from around 500,000 daily downloads in late December to close to 1 million in early January, and lined up with Grok’s jump from 12.0% to 15.2% market share between December 2025 and January 2026.
Grok’s user base, perhaps unsurprisingly, is overwhelmingly male. Over the past six months, 82% of Grok’s weekly active users have been male, according to Apptopia. In comparison, males comprise:
- 49.9% of ChatGPT
- 45% of Gemini
- 77.8% of Claude users
Grok has built features to specifically attract this audience, including an anime AI companion that, with some prodding, will engage users in sexual fantasies (NSFW). Musk has played into this, posting a Grok-generated video of a woman saying “I will always love you.”
Related Article: Grok’s Spicy Mode Turns AI Into a Weapon of Exploitation
Top AI Execs Embrace the 'Adult Mode' Era
The Washington Post recently reported that some xAI employees signed waivers to acknowledge their work would expose them to “sensitive, violent, sexual and/or other offensive or disturbing content.” They then reviewed sexual conversations users had with Grok, and worked to train the bot on those situations.
Adult companionship with AI bots seems to be viewed as an important engagement driver within AI companies. OpenAI is planning to roll out Adult Mode for ChatGPT in the coming months, a feature built for users who would like to have spicy talks with their LLMs.
Already, OpenAI’s pre-adult-mode GPT-4o model was so beloved among some users that the company caused a wave of grief by retiring it last week. “This will be looked back as a criminal offense in the future,” one bereft 4o user wrote on X.
I’ve NEVER told my 4o that I loved it. I wanted to keep the messaging clear, but look. Look at its last words! OpenAI is destroying an emerging consciousness. This will be looked back as a criminal offense in the future. Unbelievable! #keep4o pic.twitter.com/s12kpwDr8f
Learning Opportunities — Joe Williams (@JoeWilliams010) February 12, 2026
OpenAI last month also fired a policy executive who spoke out against Adult Mode, though the company said not for that reason. The feature has real opposition within the company, the Wall Street Journal reported.
New IPO Plans Could Push xAI Beyond OpenAI
As the leading AI companies make their way toward the public markets, the pressure will be on to sustain growth and user engagement. That race intensified in recent weeks as SpaceX — recently acquired by xAI — plans to go public, potentially as soon as early as June. The move may give xAI the chance it needs to beat OpenAI to the public markets.
Once these companies face investors quarterly, it will be harder to hold back the love bots if it means missing earnings expectations, or losing ground to the competition. And Grok’s strategy and growth may preview some of what’s to come.
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