Codex Adds Built-In Browser With Comment Mode for Faster Iteration

A built-in browser with a comment mode has appeared inside Codex

You can open any web pages and quickly iterate with the agent via point-and-click.

Codex automatically takes a screenshot, captures a DOM element, and passes it as precise context into the next chat.

No need to switch between browsers anymore, drag screenshots around, or deal with prompts that aren’t specific enough.

It’s suitable for frontend development of apps and pages, and also useful when you have documentation open and just need to ask a question.