Claude Code vs OpenAI Codex CLI: pricing, features and which to choose

Claude Code is Anthropic's agentic coding tool, launched in June 2025. It reads repositories, edits files, runs commands, and operates through the terminal, VS Code, JetBrains, desktop app, and web. The product targets developers working on features, bugs, tests, dependency updates, migrations, and release tasks. Anthropic added Claude Code to enterprise offerings in August 2025 after first making it available through individual accounts. Anthropic does not publish a standalone Claude Code user count or funding figure. The company said in March 2026 that Claude Code's run-rate revenue had surpassed $2.5 billion, although TechCrunch reported that figure as a company statement rather than a user metric. The product remains active, with frequent releases and changing model availability.

A typical session starts in a project directory or connected repository. The developer describes a task, Claude Code examines relevant files, proposes a plan, edits files, runs tests or shell commands, and reports results. It can stage changes, write commit messages, create branches, and open pull requests. Developers can guide behavior with CLAUDE.md files, skills, hooks, permissions, and MCP connections to services such as Jira, Slack, or Google Drive. GitHub Actions and GitLab CI/CD support automated review and issue triage. Desktop and web sessions add visual diff review, parallel cloud tasks, and scheduled work. The agent can spawn subagents, but command approvals, test results, generated edits, and security findings still need engineering review.

Claude Code suits developers who can review diffs, run tests, manage permissions, and control token spending. It is less suitable for unattended production changes, deterministic analysis, or users who only want inline completion. GitHub Copilot CLI offers a closer GitHub-centered alternative, Gemini CLI emphasizes Google's tooling and models, and Cursor remains more editor-centered. Claude Code's strongest case is repository-wide work combining planning, file edits, shell commands, tests, Git, and external tools. Its main tradeoffs are shared subscription limits, changing model access, and the need to inspect generated work. Pick Claude Code if terminal or repository-wide agent workflows matter more than lightweight autocomplete.

OpenAI Codex CLI is a terminal coding agent maintained by OpenAI. The current project launched in 2025, and its client is licensed under Apache 2.0. It runs on macOS, Linux, and Windows, with authentication through ChatGPT, an API key, or an access token. Codex is also available through OpenAI’s web, IDE, desktop, and mobile experiences, but the CLI is the direct option for developers who prefer a shell. OpenAI does not publish a separate Codex CLI user count, revenue figure, or valuation. The project is active, with installation and release paths documented through npm, Homebrew, OpenAI documentation, and GitHub. The software is open source, while hosted models and account services remain proprietary. It is designed for developers seeking repository work and automation from a command line.

A normal Codex CLI session begins in a project directory with a request such as fixing a failing test or adding a feature. Codex inspects relevant files, proposes or applies changes, runs commands, and reports results. Workspace-write sandboxing, approval prompts, additional directories, JSON output, and unattended execution options provide different levels of control. The reference also documents image attachments, web search, slash commands, usage views, and multi-agent tools. Developers can use interactive sessions for exploration or non-interactive execution in scripts and CI. The app server and plugin paths extend the client to other interfaces. Command approvals remain important because repository edits, package operations, and tests can have side effects. These controls support both hands-on development and automation-oriented workflows.

Codex CLI suits developers who want terminal control, Apache 2.0 client code, and explicit boundaries around commands and files. It is less suitable for teams seeking a standalone CLI subscription, a fully local default model, or unrestricted unattended execution. Claude Code is the closest account-based alternative, while Gemini CLI provides a Google-centered terminal agent. Aider emphasizes a lightweight terminal workflow across model providers, and Cline offers an editor-centered approach. Codex’s API path also lacks cloud features such as GitHub code review and Slack integration. Choose Codex CLI when OpenAI models, ChatGPT billing, or an open client matter most, and retain approval prompts for unfamiliar repositories. Its audience is mainly terminal-focused developers, teams using sandbox controls, CI operators, and developers wanting an Apache 2.0 client.