OpenAI rolls out Chronicle, which builds memories from screen captures to make Codex more aware of context, as a research preview for Pro subscribers on macOS
Last week, OpenAI released an all-new version of Codex for Mac that includes the best example of AI-driven computer use yet.
9to5MacZac Hall
Context & Ripple Effects
OpenAI first positioned Codex for macOS as a command center for coding agents, then expanded the desktop app with computer control, an in-app browser, automation memory, plugins, and other tools. Chronicle extends that progression by turning screen captures into reusable context.
The move matters because it shifts Codex further from a prompt-by-prompt coding tool toward a desktop work surface that can retain awareness across tasks.
First-order effects
Pro subscribers using Codex on macOS can test a screen-capture-based memory layer, reducing the need to repeatedly restate visible task context to the agent.
OpenAI adds a new context source to Codex alongside the desktop-control and automation capabilities introduced in the recent app update.
Second-order effects
Desktop-agent rivals will face greater pressure to combine computer control with persistent, workflow-specific context rather than offer isolated actions or chat sessions.
For users, the value of Codex becomes more tied to working inside its macOS app, where it can observe and retain context, rather than treating the model as a standalone coding endpoint.
Third-order effects
If this pattern holds, agentic developer tools will compete on the quality and governance of their accumulated work context as much as on model capability.
Screen-derived memory makes context collection a core product-design issue: providers will need to balance more capable continuity against users' control over what an agent retains.
The trend: This is part of the shift from stateless coding assistants toward workflow-native agentic work surfaces that combine observation, memory, and action.
We are releasing a *research preview* of Chronicle in Codex. It allows codex to build up memories based on your day to day work on your computer and then refer to these memories to be a lot more helpful. Available for PRO subscriptions and on Mac to start. This is early and
Chronicle is an experimental feature giving Codex the ability to see and have recent memory over what you see, automatically giving it full context on what you're doing. Feels surprisingly magical to use.
With Chronicle, Codex can better understand what you mean by “this” or “that.” Like an error on screen, a doc you have open, or that “thing” you were working on two weeks ago. Over time, it helps Codex learn how you work: the tools you use, the projects you return to, and the
Chronicle runs background agents to build memories from screen captures. It uses rate limits quickly. Screen captures are stored temporarily on device to generate memories—also stored on device. You can inspect and edit memories. Be aware that other apps may access these files.
Last week, we released a preview of memories in Codex. Today, we're expanding the experiment with Chronicle, which improves memories using recent screen context. Now, Codex can help with what you've been working on without you restating context. [video]
Another low key research preview! Codex has memories, and now they can include recent desktop context—ie what you've been working on I've been excited to ship something like this since I joined @OpenAI to work on desktop Super experimental. Pro only for now. Share feedback 🙏