This article explores the differences in how people use ChatGPT and Claude, two of the biggest AI companies’ models. It highlights key findings from research papers by OpenAI and Anthropic.Most ChatGPT use is non-work focused on writing tasks, while Claude is used more for automation, especially coding. ChatGPT usage is booming worldwide, with 700 million weekly users as of July 2025. Growth has been faster in low- and middle-income countries over the past year. The user base skews young, with nearly half of all messages from adults coming from people under 26.The article concludes by summarizing key takeaways: most ChatGPT use is non-work focused on writing tasks, while Claude is used more for automation, especially coding. It also highlights the uneven adoption of AI across different regions and industries.