OpenAI’s Codex for Mac: A New Screen-Aware AI Assistant
Chronicle: Capturing Your Screen for Context
OpenAI’s Codex for Mac has introduced a research preview feature called Chronicle, which captures your Mac screen periodically, sends the screenshots to its servers for processing, and stores text summaries as local unencrypted Markdown files. This new addition allows the AI assistant to understand user activity without explicit instructions. However, it raises privacy concerns as raw screen captures are temporarily stored and processed in the cloud.
Feature Overview and Functionality
- Release Date: April 20, 2026
- Availability: Unavailable in EU, UK, and Switzerland; requires a Pro subscription and Apple Silicon.
- Key Points:
- Periodically captures screenshots of your desktop.
- Processes content into text summaries using OCR and visual analysis.
- Stores summaries as local Markdown files for AI context.
- Integrates with Codex’s broader update, transforming it from a coding assistant to a versatile AI workspace.
How Chronicle Works
Chronicle operates through background agents that:
- Capture screenshots at regular intervals.
- Send screenshots to OpenAI servers for processing.
- Create text summaries and save them locally.
- Include these memories in Codex’s context when prompted, enabling it to recognize applications, documents, code, and conversations without repetition.
Privacy Considerations
While OpenAI states that raw screen captures are not stored on its servers after processing, the generated memories persist indefinitely as plain text files on your device. This design choice contrasts with privacy-focused competitors like Screenpipe and Rewind AI, who prioritize local-first architectures.
"An experimental feature giving Codex the ability to see an… unfiltered view of your digital life." – Greg Brockman, OpenAI’s President.