Mid August update

Image inputs

You can now attach images to your prompts in Codex web to ask for frontend changes or follow up on whiteboard sessions.

Container caching

Codex now caches containers to start new tasks and follow-ups 90% faster, reducing the median start time from 48 seconds to 5 seconds. You can configure a maintenance script to update the cached environment before new tasks.

Automatic environment setup

Environments without manual setup scripts now run the standard installation commands for common package managers like yarn, pnpm, npm, go mod, Gradle, pip, poetry, uv, and cargo. This reduces test failures for new environments by 40%.