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Key Takeaways
- OpenAI says ChatGPT has 1.2 billion weekly users (OpenAI DevDay, 29 September 2026).
- A year earlier the widely reported figure was 800 million weekly users (September 2025), so the audience has grown by about half in twelve months.
- 70% of consumer ChatGPT use is personal and 30% is work-related, according to OpenAI’s own usage research (2025).
- Asking questions is the biggest use: 49% of messages, against 40% for getting tasks done such as writing or code (OpenAI, 2025).
- 28% of employed adults use ChatGPT for work, according to a joint OpenAI and NBER study (2025).
- Our take: more than a billion users a week now ask a chatbot what to buy, where to go and who to trust. If your brand isn’t in those answers, it isn’t in the running.
Introduction
In just a few short years, ChatGPT has gone from experimental chatbot to cultural phenomenon.
It powers countless creative projects, business workflows and everyday conversations, reflecting the world’s fascination with AI as both a productivity tool and a companion.
The numbers below demonstrate how generative AI is reshaping our relationship with technology and why ChatGPT sits at the heart of this transformation.
Key ChatGPT Statistics 📈
Metric | Statistic | Source |
|---|---|---|
Weekly users |
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Monthly Visits |
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Daily Queries |
User Growth & Adoption
Rapid uptake
- Early success: ChatGPT reached 100 million users within two months of its late‑2022 launch.
- Mass adoption: The platform surpassed 400 million weekly active users by February 2025 and doubled to 800 million by September 2025. At DevDay in September 2026, OpenAI said ChatGPT had 1.2 billion weekly users (openai.com).
Engagement
- Daily sessions: ChatGPT logs 122.58 million daily users and processes 1–2 billion queries daily.
- Average session duration: Users spend approximately 7 minutes 4 seconds per session.
- Usage patterns: According to OpenAI’s research, 30% of consumer usage is work‑related, while 70% is personal; 49% of messages ask questions, 40% perform tasks (e.g., writing code), and 11% express feelings.
Demographics
- Gender: 54.66% male and 45.34% female users OpenAI’s study indicates a more balanced gender representation, with the share of female names rising from 37% in early 2024 to 52% by July 2025
- Age: 18–34 years: 52.99 % of users 35–54 years: 32.91 %. 55+ years: 14.11 %.
- Global distribution: Top five countries by traffic: United States (17.2%), India (8.27%), Brazil (5.73%), Japan (3.7%), Germany (3.39%) ChatGPT is available in 161 countries; 15 countries still restrict or ban access
Usage at Work
A joint OpenAI–NBER study in 2025 examined ChatGPT adoption in professional settings:
- Workforce usage: 43% of U.S. knowledge workers use AI on the job, and 28 % of all employed adults use ChatGPT for work.
- Productivity gains: Over half of users report saving three or more hours per week; knowledge workers using AI produce 40% higher‑quality work.
- Education level: 45% of workers with postgraduate degrees use ChatGPT at work, compared with 38% with a bachelor’s degree and 17% with high school or less.
- Age differences: Employees aged 18-29 are twice as likely to use ChatGPT at work compared to those over 50.
Revenue & Monetisation
- Annual revenue: OpenAI’s revenue reached $3.7 billion in 2024 and was projected to hit $10 billion annual recurring revenue by mid‑2025.
- ChatGPT Plus: The Plus subscription (US $20/month) has 10–15 million subscribers, producing hundreds of millions in recurring revenue.
- Enterprise customers: More than 1.5 million enterprises were using OpenAI’s API or ChatGPT Enterprise by February 2025.
Platform comparison
- ChatGPT is the sixth most visited website globally, with 4.61 billion monthly visits.
- In terms of average answer quality, ChatGPT responses are longer (1,686 characters) and provide more sources than typical Google responses.
✨ OOB’s Thoughts ✨
ChatGPT launched in November 2022.
In five days, it reached one million users.
In two months it crossed 100 million users (a milestone that TikTok nine months).
Now OpenAI says it has 1.2 billion weekly users. That’s three times the 400 million it had in February 2025.
GPT‑5 came in promising better writing, coding and fewer sneaky/misleading answers. The arms race with other models like Gemini means OpenAI is continually grinding to upgrade; to be the tab you keep open, not the one-off tool you don’t need.
It’s a daily assistant for many of us, not projected to overtake Google, but big enough to threaten it, completely uproot search behaviour, and send the SEO community into crisis.
The future of ChatGPT looks like personalised chats, integrated ads for non-paying users, increased regulation, and improved capabilities to keep up with AI Mode, Nanobanana and more.
To see how AI adoption compares with social platform habits, browse our roundup of social media usage across the UK.
Conclusion
From a standing start in 2022, ChatGPT has become a mass-market platform with 1.2 billion weekly users, by OpenAI’s count. With strong enterprise adoption, significant subscription revenue and rapid improvements in quality and usage, ChatGPT shows no sign of slowing down. For marketers and content creators, the platform presents opportunities for GEO (generative engine optimisation), customer support automation and creative productivity.
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