Codex
last releaseApril 16, 2026
powered byGPT-5.5
goblin vibe check:
worth it if you want one agent that can actually move across the whole job instead of babysitting a sidebar
openai's full agentic development environment for coding, review, browser work, background computer use, and ongoing developer tasks. useful when you want one assistant that spans editing, shell work, pr review, frontend iteration, and repeated software chores.
background computer use with its own cursor across desktop appsdeeper support for pr review, multiple terminals, ssh devboxes, and an in-app browsercan generate images and carry repeatable work forward over timepositioned for the full software development lifecycle rather than only code completion
key features
background computer use with its own cursor across desktop appsdeeper support for pr review, multiple terminals, ssh devboxes, and an in-app browsercan generate images and carry repeatable work forward over timepositioned for the full software development lifecycle rather than only code completion
spec & usage
major official product update published april 16, 2026
openai says more than 3 million developers use codex every week
available as a codex app and part of openai's broader agentic tooling stack
limitations
best fit for openai-centered workflows rather than fully local or vendor-neutral setups
scope:
codetoolagentcloudpaidbusiness
launchApril 16, 2026
last releaseApril 16, 2026