Codex
Codex is an OpenAI coding agent introduced in 2025 for tasks such as editing code and running tests.
Codex is a coding agent introduced by OpenAI in 2025. It can inspect a codebase, edit files and run tests, and is available through ChatGPT and command-line tools, among other interfaces. The command-line tool is called Codex CLI.
OpenAI also released a code-generation model called Codex in 2021. Distinct from the later coding agent, that model provided the foundation for early versions of GitHub Copilot.
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Articles covering this entry
That overhead gets in the way when a developer hands cloud credentials to a coding agent such as Cursor, Claude or Codex and asks it to build and deploy an app.
To build an app, describe it to a coding agent such as Claude Code or Codex and keep the API key in a local .env file.
Claude Code and Codex are not AI models.
…rnal research infrastructure that is constantly changing and often unstable, Codex now writes glue code and diagnoses errors, and an internal Slack channel wher…
Rive now ships a command-line interface (CLI) that plugs into coding agents such as Claude Code and Codex, so the same work can start from a text prompt.
Its baseline features match coding agents such as Codex and Claude Code: indexing a codebase, writing code, running commands and fixing failing tests.
Handing OpenAI's Codex a single screenshot of a Slack thread and asking "Hey, can you just build this?" was enough to get a working macOS live translation app i…
A Build in Codex option installs the OpenAI Developers plugin so you can develop, test and package the agent's code in a dedicated coding environment.
Examples include Claude Code CLI, Codex CLI, the Codex desktop app, Vercel's Fx, DeepSeek Harness and OpenCode.
Nearly all of the production code behind his work now comes from Codex, OpenAI's coding agent, and he reviews and sometimes merges the pull requests, the propos…
That pushes model makers into vertical products such as Claude Code and OpenAI Codex, and possibly into accounting, marketing and finance tools for small busine…
General-purpose assistants such as Claude Code, Codex and ChatGPT are excellent at writing code, but they are not built to serve as customer-facing services for…
OpenAI has repackaged features from Codex, its developer tool, into Dots, a conversational agent meant for everyday users.
Dots can then update a teammate over Slack and email and, when needed, open a session in Codex, OpenAI's coding tool, to build web page mockups.
If Codex or Claude Code keeps hitting its usage limit, the fix is often not a bigger plan.
It is sandbox and container tooling that hosts agents such as Claude Code, OpenAI Codex CLI, Copilot CLI and OpenCode, and lets users swap between them.
Pressing the Command key twice in Codex or ChatGPT captures an app's metadata, structure and accessibility tree rather than raw pixels.
In another case, he spent 10 to 20 minutes looking for a reference he remembered seeing in Slack, including a search with Codex, and gave up.
Meta Muse made everyday messages and recurring tasks easier to follow, while OpenAI Dots worked more naturally alongside Slack and Codex.
OpenAI's all-new Codex Cloud lets a coding task continue after the laptop that started it closes.
Codex supports collaboration among agents and their use of tools within applications.
Background tasks executed through ChatGPT or Codex do count against usage limits, and standard usage terms apply after the introductory period.
Claude Code from Anthropic and Codex from OpenAI are the coding agents at the center of this approach.
Instead of setting up Claude Code, Codex or Gemini CLI separately for each comparison, a developer can select a harness for a task in the same workspace.
Webcmd works as a skill for agent tools including OpenAI Codex, Claude Code, Hermes, and OpenCode.
The coding setup draws on Claude Code, Codex, Kimi, DeepSeek, and Gemini.
Codex and Claude Code each beat a human record in Prime Intellect’s optimizer speedrun, a test of how quickly a fixed model can reach a target training result.
The repository can be installed as an MCP server for Claude Code or Codex with a TypeSafe API key.
ChatGPT’s web interface is starting to look more like Codex, OpenAI’s coding application.
Coding agents such as Claude Code and OpenAI Codex can help a solo founder assemble a connector prototype quickly.
…also makes the workflow easier to carry between agents such as Claude Code and OpenAI Codex; the chat history does not have to serve as the only project record.