OpenAI says its Codex product has grown into a broader productivity tool, with more than 5 million weekly active users and rising adoption among people doing knowledge work.
The company outlined the figures in a new report, The Next Era of Knowledge Work, released Monday. OpenAI said Codex is being used well beyond software development, with workers in fields such as operations, finance, legal and analysis turning to it for routine tasks and faster output.
Developers remain Codex’s largest user group, according to OpenAI, but knowledge workers now account for about 20 percent of users. The company said that segment is expanding more than three times as fast as the broader user base. OpenAI also said weekly active usage has increased more than sixfold since the launch of the Codex desktop app in February.
The report portrays Codex as a tool that is increasingly helping users produce reports, spreadsheets, presentations, contracts and similar work products. OpenAI said people are also using it for research, data analysis, workflow automation and for building small internal tools that would once have required help from engineers.
The company said the fastest-growing knowledge-work uses include data analysis, research and the creation of what it called knowledge artifacts, a category that appears to cover documents and other deliverables used in office work.
OpenAI said some users are now running several Codex tasks at the same time, using the system to investigate data, draft materials and automate workflows in parallel. The company argued that this kind of multitasking could change how AI affects office work over time by allowing people to take on larger projects and expand the scope of their roles.
The report also suggests a link between that increased speed and career growth, saying the tool may help workers advance by making it easier to move projects forward and take on more ambitious assignments.
Across industries, OpenAI said the common thread is a reduction in friction. It said Codex can help users locate information spread across different systems, coordinate tasks between teams and tools, produce polished deliverables and navigate review and approval processes more efficiently.
The latest figures come as OpenAI continues to position Codex as more than a coding assistant. The product, which originally centered on programming use cases, is increasingly being framed as part of a larger push into workplace automation and knowledge-worker productivity.
OpenAI did not release a detailed breakdown of how the 5 million weekly users are distributed across industries or company sizes. It also did not say whether the growth reflects new customer adoption, higher usage among existing users, or both.
Still, the company’s report signals that it sees Codex as part of a broader shift in how AI tools are used at work. Rather than serving only technical teams, OpenAI is betting that AI systems can become everyday helpers for employees who write, analyze, coordinate and package information for decision-making.
For OpenAI, the latest milestone offers a snapshot of that transition. For users, it suggests that AI assistants like Codex are moving further into the core routines of office work, not just the software development process.