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OpenAI BlogPublished: Jun 2, 2026, 19:00 JST

OpenAI says Codex now has 5M weekly users, up 6x since February

3 Key Points

  1. What happened

    OpenAI released a new report, The Next Era of Knowledge Work, showing Codex has more than 5 million weekly active users, up more than 6x since the desktop app launched in February. Knowledge workers now make up about 20 percent of users and are growing more than three times as fast as developers.

  2. Why it matters

    Codex is no longer just a coding tool. Knowledge workers are using it to create reports, spreadsheets, presentations, contracts, and to automate routine tasks, which could reshape AI's long-term impact on work and potentially accelerate career advancement.

  3. What to watch

    The fastest-growing knowledge-worker tasks are data analysis, research, and knowledge artifact creation. The report suggests that as users run multiple Codex tasks in parallel, they may take on more ambitious projects, but whether this leads to greater role scope depends on sustained adoption.

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Context & Analysis

OpenAI's latest report marks a shift in how Codex is positioned: from a developer tool to a broader productivity aid. The surge in weekly active users, particularly among knowledge workers, suggests that AI assistants are moving beyond coding into everyday business tasks. This aligns with the report's emphasis on reducing friction across professions, from finding information to producing deliverables and coordinating across teams.

The report highlights a pattern where users increasingly run multiple tasks in parallel, enabling them to investigate data, draft materials, and automate workflows simultaneously. This increased velocity could lead to more ambitious projects and potentially accelerate career advancement, according to the report. The data points to a future where AI tools like Codex are integrated into the flow of knowledge work, not just as a standalone coding environment.

The longer-term impact hinges on whether this adoption sustains and translates into real productivity gains. If knowledge workers continue to use Codex at this pace, it could broaden the scope of their roles and potentially alter career trajectories. However, the report is an early snapshot, and the actual influence on work patterns will depend on how deeply these tools become embedded in everyday routines.

FAQ
How many people use Codex weekly?
Codex has more than 5 million weekly active users, up more than 6x since the desktop app launch in February.
Who is using Codex now?
While developers remain the largest user group, knowledge workers represent about 20 percent of users and are growing more than three times as fast.
What are the fastest-growing tasks for Codex?
The fastest-growing knowledge-worker tasks are data analysis, research, and knowledge artifact creation, such as reports, spreadsheets, and presentations.

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