Overview
- OpenAI said in a report shared with Axios that Codex now has millions of weekly active users, with public counts reported at roughly 4 million in one source and over 5 million in another.
- Non‑developer knowledge workers now make up about 20 percent of the user base and are adopting Codex more than three times faster than developers.
- The fastest growing uses for those knowledge workers are data analysis (up about 110% week‑over‑week), research (about 37%), and handling knowledge artifacts such as reports, PDFs and spreadsheets (about 36%).
- More than 60 percent of users run multiple Codex tasks at once during the day, a jump from mid‑April levels, and real‑world audits and user accounts show the system can make errors and impose mental strain that requires careful human supervision.
- The platform’s rise follows earlier agent tools such as Anthropic’s Claude Code and accelerated after OpenAI launched a desktop app in February, creating new ways to pull context from email, calendars and documents and change how teams find information and coordinate work.