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OpenAI Codex CLI Review 2026 — Open-Source Terminal Coding Agent

OpenAI Codex CLI is an open-source terminal agent running GPT-5.4 with MCP support, cloud task execution, and sandboxed security. Requires ChatGPT Plus.

OpenAI Codex CLI Review 2026 — Open-Source Terminal Coding Agent

In inglese

Codex CLI is a command-line coding agent that runs on a user's computer. It can work within a local codebase, execute commands, apply changes, review code, and manage tasks from the terminal.

Developers can install it on macOS, Windows, or Linux using standalone installers, npm, or Homebrew. It is available under the Apache-2.0 license and can use a ChatGPT plan or an OpenAI API key; API usage may cost extra.

Features

  • Runs a coding agent locally from the terminal
  • Reads and modifies files in a local codebase
  • Executes commands and works within project directories
  • Runs non-interactive tasks with the exec command
  • Performs non-interactive code reviews
  • Supports MCP servers and plugins
  • Provides sandboxed command execution
  • Licensed under Apache-2.0

Use cases

  • Explain an unfamiliar codebase
  • Implement a feature in an existing project
  • Fix bugs and apply changes to a working tree
  • Run automated code reviews from the command line
  • Manage MCP tools and coding workflows
  • Test changes in a local development environment

Pros

    Cons

      Latest updates

      • 0.157.0 (0.157.0)

        Added GPT-6 Sol and Luna with Bedrock support, migration prompts, fullscreen transcripts, selection, fork and import features, and background-server startup.

      Capabilities

      • VS Code — “If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.” source
      • Command line — “Codex CLI is a coding agent from OpenAI that runs locally on your computer.” source

      Get it

      Pricing

      Starting price
      $4/user/mo
      Prices checked
      2026-09-25

      Free

      Free

      • Unlimited public/private repositories
      • Dependabot security and version updates
      • 2,000 CI/CD minutes/month
      • 500MB of Packages storage
      • Issues & Projects
      • Community support

      Team

      • $4 USD per user/month
      • Access to GitHub Codespaces
      • Repository rules
      • Multiple reviewers in pull requests
      • Draft pull requests
      • Code owners
      • 3,000 CI/CD minutes/month

      Enterprise

      • Starting at $21 USD per user/month
      • Data residency
      • Enterprise Managed Users
      • User provisioning through SCIM
      • Enterprise Account to centrally manage multiple organizations
      • Environment protection rules
      • Repository rules
      Official website