Type: url
Original: https://openai.com/index/introducing-codex/
Status: generated
Summary
OpenAI’s May 2025 research-preview announcement of Codex, a cloud-based software engineering agent powered by codex-1 that runs each task in its own isolated sandbox preloaded with the user’s repository. It describes citation-backed verifiability, AGENTS.md guidance files, secure execution with internet access disabled at launch, early customer use, and a codex-mini-latest model for Codex CLI. The page now carries a notice that the launch post is outdated.