OpenAI has announced the research preview of Chronicle, a new feature in Codex that allows it to develop memories based on users’ daily computer activities for enhanced assistance. Currently available for PRO subscriptions on Mac, this feature builds on a prior memories preview and aims to improve user continuity through screen context. Employees at OpenAI have noted that Chronicle has significantly transformed how they utilize Codex in their workflows.

Codex: Codex is OpenAI’s dedicated macOS application serving as a command center for AI coding agents, supporting parallel workflows, bug fixes, and code generation. It received recent updates including computer use, in-app browsing, and initial memory features. Chronicle in Codex improves memory retention by analyzing recent screen context, allowing more relevant help without repeating project details.
OpenAI: OpenAI is an artificial intelligence research laboratory developing advanced models and tools for coding and general applications. The organization recently introduced the Codex app as a comprehensive platform for AI-assisted software development on macOS. In this announcement, OpenAI is expanding Codex with Chronicle, a research preview that builds contextual memories from user computer activity to enhance assistance.
Thsottiaux: Thsottiaux, known as Tibo, is an engineering lead on OpenAI’s Codex team. He shared the release details of Chronicle via X, highlighting its integration for PRO users on Mac. According to his post, the feature has transformed daily Codex usage for him and fellow OpenAI team members.

`json
{
“Early Access”: “The research preview is available to PRO subscription users on Mac, marking an experimental phase with high token usage.”,
“Feature Expansion”: “Chronicle builds upon a memories preview released the prior week in Codex, incorporating screen context for better continuity.”,
“Internal Adoption”: “OpenAI employees, including the announcing team member, report Chronicle has fundamentally altered their interaction with Codex.”
}
`