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When OpenAI launched ChatGPT in late 2022, it quickly became the fastest-growing consumer application in history. Within weeks, millions of people were experimenting with AI-generated answers, essays, poems, and code. But in the rush of headlines and hype, one big question was often left unanswered: how are people actually using ChatGPT in their daily lives?
A new working paper from the National Bureau of Economic Research (NBER), titled “How People Use ChatGPT” (September 2025), finally gives us a data-driven look at this question. The authors — Chatterji, Cunningham, Deming, Hitzig, Ong, Shan, and Wadman — analyzed ChatGPT conversations from its launch through July 2025, offering one of the most comprehensive portraits of usage to date.
Their findings reveal not just who is using ChatGPT, but what they use it for, how those behaviors have changed over time, and what this all means for the future of work, education, and digital discovery.
From Curiosity to Mass Adoption
By mid-2025, ChatGPT had reached an extraordinary milestone: roughly 10 percent of the world’s adult population had used the tool. That level of adoption is rare for any technology, let alone in less than three years.
The demographics tell an equally interesting story. Early on, usage skewed toward men in tech-savvy, high-income countries. Over time, however, the gap began to close. More women started using ChatGPT, and adoption in lower-income countries accelerated. What began as a niche tool for knowledge workers has become a mainstream global utility, used by people with very different backgrounds and needs.
Work vs. Everyday Life
One of the most striking findings is that most ChatGPT usage is not work-related. In the earliest months, people experimented with using the model to write emails, summarize reports, or debug code. But as the user base grew, personal, educational, and even recreational use cases became dominant.
By 2025, more than 70 percent of conversations were non-work related, up from just over half in the early days. Work-related use remains important — and is especially prevalent among people with higher education levels in professional jobs — but ChatGPT has clearly become more than just an office assistant. For many, it’s a daily companion for advice, learning, and creativity.
What People Actually Do With ChatGPT
So what do people talk to ChatGPT about? The NBER team categorized conversations into themes and found that three types of requests dominate:
- Practical guidance: users ask for how-tos, instructions, or step-by-step help with everyday problems.
- Information seeking: factual questions and explanations, ranging from history and science to “what’s the best way to cook this?”
- Writing support: drafting emails, essays, reports, or even short stories.
Together, these account for nearly 80 percent of all usage. Programming, self-expression, and other niche topics make up the remainder.
In professional contexts, writing stands out as the killer app. Workers lean on ChatGPT to produce drafts of documents, structure presentations, or clean up language. This isn’t simply about saving time; it’s about lowering the barrier to getting started and reducing the “blank page problem” that so often slows down knowledge work.
How People Use ChatGPT — Key Findings (NBER 2025)
A quick snapshot you can drop into your article or share on social.
~10% of Adults Worldwide
By mid-2025, about one in ten adults globally had used ChatGPT.
Work vs Non-Work
Non-work use dominates and keeps growing — over 70% of conversations by 2025.
Writing Is the Standout Work Use
Drafting emails, reports, and documents is the most common professional task.
Top Tasks ≈ 80% of Use
Practical guidance, information seeking, and writing account for the vast majority of queries.
Source: NBER Working Paper W34255 (Sept 2025), “How People Use ChatGPT”. Read the paper.
How Behavior Has Evolve
Patterns of usage have shifted as the technology has matured. Early adopters heavily relied on ChatGPT for work tasks, particularly coding and writing. But as the user base broadened, non-work tasks grew at a faster pace. By 2025, conversations about hobbies, personal advice, and casual learning will far outnumber workplace requests.
This shift reflects the way new technologies often diffuse: they start with specialists, then become part of everyday life. In the same way the internet moved from research labs to living rooms, ChatGPT has expanded from a productivity tool to a personal assistant, tutor, and creative partner.
The Economic Value Question
Does this usage translate into measurable economic value? The authors argue yes — but in nuanced ways.
On the work side, ChatGPT creates value by accelerating tasks that require written output. Drafting a report that once took hours might now take minutes. Employees can focus more on refining, validating, and presenting ideas, rather than struggling with first drafts. This is especially meaningful in knowledge-intensive roles.
But the paper also emphasizes the importance of non-work use. People turn to ChatGPT for education, personal development, and leisure. These may not show up directly in productivity statistics, but they represent a different kind of value: empowerment, accessibility, and new ways of interacting with information.
Why Global Adoption Matters
Another key takeaway is the rapid uptake of ChatGPT in lower-income countries. Adoption is not just concentrated in Silicon Valley or wealthy European capitals. From Latin America to South Asia, millions of people are using ChatGPT — sometimes as their first real encounter with powerful AI.
This raises important issues for accessibility and inclusion. If ChatGPT becomes a core tool for learning and opportunity, differences in access could widen existing inequalities. But the opposite is also possible: if the technology continues to spread affordably and supports multiple languages, it could help level the playing field by making high-quality information universally available.
Implications for Businesses
For companies and marketing leaders, the findings carry clear lessons:
- Generative tools are reshaping workflows. Writing is the single biggest professional use case, which means organizations that rely on written communication (from legal to marketing) need to think seriously about how AI fits into their processes.
- Information seeking is shifting. Users increasingly turn to ChatGPT for factual answers. This has implications for search and SEO strategies: being mentioned, cited, or represented correctly in AI outputs may become as important as ranking in Google.
- Consumer use creates brand touchpoints. Even when people use ChatGPT casually, they may encounter brand names, product recommendations, or industry references. That exposure builds awareness — even if it doesn’t drive immediate clicks.
- Global markets are opening. With adoption growing quickly in emerging economies, companies should think about localization and accessibility if they want to reach new audiences through AI-mediated discovery.
Challenges and Limitations
Of course, not everything is rosy. The NBER study points to several caveats:
- Classifying work vs non-work is imprecise, since conversations often blend the two.
- Automated analysis of conversation topics may miss nuance, especially in creative or emotional contexts.
- The data runs only through July 2025, and newer models or policy changes could reshape usage patterns quickly.
- Measuring “value” remains tricky. We can see what people are doing, but quantifying productivity gains or broader impacts is still a work in progress.
Looking Ahead
So where does this leave us? The study paints a picture of a technology that has already become woven into daily life. ChatGPT is not just a productivity tool for a select few; it is a global platform used by students, workers, hobbyists, and everyday people seeking advice or inspiration.
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The future may bring even deeper integration. Imagine ChatGPT embedded directly into productivity apps, e-commerce platforms, or education systems. If writing, guidance, and information remain core use cases, then we may see a world where much of our daily digital interaction is mediated through conversational AI.
But the study also reminds us that usage is fluid. Just as people shifted from work to non-work applications over time, future patterns may evolve again as capabilities expand and new competitors emerge. Policymakers, businesses, and educators will need to stay agile.
Conclusion
The NBER’s How People Use ChatGPT is the clearest window yet into the everyday realities of AI adoption. Ten percent of the world’s adults have already used it. Most of them are not programmers or consultants, but regular people seeking advice, information, or a better way to write.
For business leaders, the message is clear: AI is no longer a speculative trend. It’s embedded in how people learn, work, and interact with information. The companies that adapt early — by rethinking workflows, content strategies, and customer touchpoints — will be the ones best positioned to thrive in this new landscape.
