OpenAI Codex

Name: OpenAI Codex
Brand: ChatGPT
Rating: 4.7 (5 reviews)

Unclaimed

Delegate coding tasks in plain language, get pull requests

AI Coding AI Agents Developer Tools

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4.7(5 across the web)

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5 reviews tracked·3 press mentions

TL;DR - OpenAI Codex

Cloud agent in ChatGPT that takes a coding task and returns a reviewable pull request
Runs each task in an isolated sandbox, so you can run many in parallel
Connects to GitHub, follows AGENTS.md, and shows the test logs behind every change

Pricing: Free plan available

Best for: Growing teams

4.7/5 across review platforms

What is OpenAI Codex?

Editorial review

OpenAI Codex is a cloud-based software engineering agent built into ChatGPT. You delegate coding tasks in plain language and Codex works in its own sandboxed cloud environment: it reads your repository, writes and edits code, runs tests, and proposes a pull request for you to review and merge. Because each task runs in an isolated environment, you can launch many tasks in parallel and check back on the results. It is aimed at developers who want to offload well-scoped work, from fixing bugs and shipping features to refactoring and answering questions about a codebase. Codex connects to GitHub, follows repo-specific setup and guidance (AGENTS.md), and surfaces the logs and test output behind its changes so you can verify exactly what it did. A companion Codex CLI brings the same agent to your terminal for local, interactive work.

LCLouis CorneloupUpdated May 29, 2026 · how we evaluateSourceopenai.com ↗

Ratings Across the Web

4.7(5 reviews)

Ratings aggregated from independent review platforms. Learn more

Key Features

Delegate tasks in natural language and get back a pull requestSandboxed cloud environment per task with parallel executionGitHub integration and repo-aware setup via AGENTS.mdRuns tests and surfaces logs so changes are verifiableCompanion Codex CLI for local terminal work