The point: Codex, which reached 10 million users in two weeks, transforms from a coding tool into an agent-based platform for knowledge workers, with non-developer users already growing three times faster than developers.
OpenAI has merged Codex and ChatGPT Work within a shared agent architecture, reaching 10 million combined users in less than two weeks. The platform now serves not only developers but also knowledge workers, who currently represent approximately 20 percent of Codex’s user base and are growing three times faster than the developer base.
Codex’s Monthly Active Users (MAU) grew more than tenfold in 2026. Following the launch of ChatGPT Work and Codex on July 9, 2026, OpenAI recorded 10 million combined users within two weeks. This growth reflects the transition from pure coding agents to knowledge worker agents.
Codex now functions as a shared agent harness for both developers and knowledge workers. This differs structurally from traditional coding tools: whereas knowledge workers previously switched between fragmented tools (documents, spreadsheets, presentations, specialized applications), ChatGPT Work enables these primitives to be unified through agents. A user describes a desired outcome, and the agent orchestrates the required tools, context, and artifacts.
As early as June 2026, OpenAI disclosed that knowledge workers comprise approximately 20 percent of Codex users and are growing more than three times faster than developers. This led to structural reorganization: OpenAI executives Greg and Tibo took responsibility for product and ChatGPT to execute a “superapp” consolidation. Both products now share the same agent architecture with differences in UX, Git visibility, artifacts, and sandboxing.
The technical foundation is based on persistent computers, artifacts, sites, plugins, memory, and sub-agents. These components enable context to be gathered from code, Slack, documents, and local files. Some teams are already replacing presentations and spreadsheets with interactive websites generated and managed by the agent.
Source: www.latent.space · Published July 28, 2026
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