Overview
- Sensor Tower estimates ChatGPT hit one billion monthly app users in May 2026, making it the fastest app to reach that milestone.
- Rivals are growing faster year over year, with Sensor Tower estimating Claude up 640% and Meta AI up 973% while ChatGPT rose 62%.
- Public sentiment has cooled, with a March 2026 Pew Research survey finding half of U.S. adults more worried than excited about AI.
- Sensor Tower data show sentiment-driven shifts in behavior, including a roughly 295% day-on-day spike in ChatGPT uninstalls after OpenAI’s late-February Pentagon announcement.
- Commercial pressure is rising as Anthropic and OpenAI move toward public listings while workplace use climbs, with a BCG poll showing 74% of frontline workers regularly use AI.