OpenAI Codex

OpenAI's coding agent for local and cloud workflows

codingFree tier Reviewed Aug 2026

Overview

Codex is OpenAI's coding agent for understanding repositories, implementing changes, running tests, reviewing code, and delegating work locally or in the cloud.

Key features

CLI and IDE workflows
Local and cloud tasks
Repository instructions
Code review
Parallel agent workflows

Limitations

Requires human review for consequential changes
Permissions and approvals must be configured carefully

Best for

Feature implementationDebugging and refactoringTests and code reviewLong-running delegated tasks

Pricing

Pricing verified 8/16/2026. Always confirm on the official website.

Learn OpenAI Codex

OpenAI Codex Crash Course

Learn a disciplined Codex workflow across ChatGPT, CLI, IDE, and cloud tasks—from repository context to reviewed code. Recommended prerequisite: basic programming and Git.

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