Claude Code vs Codex
Claude Code is Anthropic's coding agent and Codex is OpenAI's. Both run in the terminal as CLIs and also ship as desktop apps: Claude Code Desktop is the Code tab of the Claude app, and the Codex app lives inside the ChatGPT desktop app. Both can isolate parallel sessions in git worktrees. The real differences are the model family and how you pay, so the best test is to run both on the same task; Agentastic gives each one its own worktree for exactly that.
Who should choose each option#
Claude Code
Choose Claude Code if you prefer Anthropic's models, already pay for Claude Pro or Max, or want the same hooks, skills, and MCP configuration across its CLI and desktop app.
Codex
Choose Codex if you prefer OpenAI's models, already pay for ChatGPT (Codex is included even on the Free plan), or want an open-source CLI.
Feature comparison#
| Feature | Claude Code | Codex |
|---|---|---|
| Vendor | Anthropic | OpenAI |
| Models | Anthropic's Claude models | OpenAI's GPT models |
| Surfaces | CLI, Claude Code Desktop, VS Code and JetBrains extensions, web | Open-source CLI, Codex in the ChatGPT desktop app, IDE extension, Codex Cloud |
| Desktop app platforms | macOS, Windows, Linux beta | macOS, Windows, Linux preview |
| Worktree isolation | claude --worktree; a worktree option per desktop session | Managed worktrees in the desktop app; experimental --worktree in the CLI |
| Pricing | Claude Pro, Max, Team, Enterprise, or API billing | ChatGPT Free, Go, Plus, Pro, Business, Edu, Enterprise, or an API key |
Pricing#
Claude Code
Claude Pro is $20 a month ($17 billed annually), Max starts at $100, and Team and Enterprise plans are available; or pay per token through the Claude Console.
Codex
Included in every ChatGPT plan, from Free through Go ($8 a month), Plus ($20), and Pro ($100 to $500), plus Business, Edu, and Enterprise; or billed at API rates with an API key.
Using them together#
Run them side by side in Agentastic, one Claude Code worktree and one Codex worktree on the same task, and compare the diffs they produce. It is the fastest way to decide which model fits a given codebase.
Frequently asked questions#
Can I run both Claude Code and Codex at the same time?
Yes. The easiest way is two Agentastic worktrees on the same repository; neither agent sees the other's changes until you merge.
Which one is better at long tasks?
It depends on the task, the codebase, and the model versions that month, so benchmarks age quickly. Run both on the same task in separate worktrees and compare the diffs; see How to compare AI coding agents.
Is Codex free?
Codex is included in every ChatGPT plan, including Free, with usage limits that grow on paid plans (pricing). Claude Code needs a paid Claude plan, Pro or above, or API billing.
Claude Code app vs Codex app: what is the difference?
Claude Code Desktop is the Code tab of the Claude app, with parallel sessions, a worktree option, and a browser pane; it needs a paid plan. The Codex app now lives inside the ChatGPT desktop app, with managed worktrees, Handoff, and cloud tasks, on every ChatGPT plan. See Agentastic vs Claude Code Desktop and Agentastic vs the Codex app.
Do Claude Code and Codex support git worktrees?
Yes. Claude Code has claude --worktree and a worktree option in its desktop app; Codex manages worktrees in the ChatGPT desktop app and added an experimental --worktree flag to its CLI in September 2026. Agentastic creates a worktree for every task, whichever agent runs in it.
Codex vs Claude Code vs Cursor: how do they compare?
Claude Code and Codex are agents from model vendors; Cursor is an editor with its own agent. Many developers run Claude Code and Codex in parallel worktrees and keep an editor for hands-on work; see Agentastic vs Cursor.
Can I track Claude Code and Codex usage in one place?
Yes. Agentastic's Usage panel shows remaining quota for every Claude and Codex login, plus token and dollar history read from their local logs; see the Claude Code usage tracker guide.
Further reading#
a framework that outlives this matchup
the practical setup
the same idea for Codex
Anthropic's two main surfaces compared
OpenAI's two main surfaces compared
See also#
Claude Code is Anthropic's coding agent. Agentastic is a free macOS workspace that runs it and 52 more agents in parallel worktrees, with diffs and review.
Codex is OpenAI's coding agent, with an open-source CLI. Agentastic is a free Mac workspace that runs it and 52 more agents in parallel worktrees, with review.
Claude Code Desktop is the Code tab of Anthropic's Claude app. Agentastic is a free Mac workspace that runs Claude Code beside Codex and 51 more CLI agents.
The Codex app now lives inside the ChatGPT desktop app. Compare it with Agentastic, a free Mac workspace that runs Codex beside Claude Code and 51 more agents.
Agentastic runs 53 CLI agents side by side in isolated worktrees on macOS. Cursor is an AI code editor with Tab, its own agents, and cloud runs. Compare them.