Compare / Claude Code vs OpenAI Codex
// head-to-head · checked Oct 16, 2026Claude Code vs OpenAI Codex
Both are agentic coding tools from frontier labs. Claude Code is Anthropic's agent for your terminal and IDE; OpenAI Codex is OpenAI's agent across ChatGPT, your editor, the terminal and the cloud, connected by your ChatGPT account.
Side-by-side
| Claude Code | OpenAI Codex | |
|---|---|---|
| What it is | Anthropic's agentic coding tool — understands your codebase, edits files, runs commands, and helps you ship faster. | OpenAI's coding agent across ChatGPT, your editor, and the terminal — runs many agents in parallel and keeps going in the cloud. |
| Category | Coding agent | Coding agent |
| Our rating (preliminary) | ★ 4.8 / 5 | ★ 4.7 / 5 |
| Pricing model | Paid · from $20/mo | Paid · from $20/mo |
| Pricing details | Included with Claude paid plans: Pro $20/mo monthly ($17/mo annual); Max from $100/mo. | Included in ChatGPT plans: Plus $20, Pro $100, Business $20/seat (2+ seats, annual). |
| Best for | Builder | Builder |
| Ranked in | AI code editors & coding agents · AI agents & agent frameworks | AI code editors & coding agents · AI agents & agent frameworks |
| Where it runs | Terminal and IDE | ChatGPT, IDE extension, CLI and cloud tasks |
| Included with | Claude Pro ($20/mo monthly) and Max (from $100/mo) | ChatGPT Plus ($20), Pro ($100), Business ($20/seat, 2+ seats, annual) |
| Cloud / parallel work | Agent works in your environment; supports subagents | Runs many agents in parallel; cloud tasks keep going when your laptop is closed |
| Code review | Can review code you point it at | Automatically reviews pull requests (per OpenAI's Codex page) |
| Models | Anthropic Claude models | OpenAI models |
Pros & cons
Claude Code
- + Top-tier autonomous coding in the terminal and IDE
- + Hooks, subagents, plugins/MCP
- + Excellent at large refactors
- − Usage limits on subscription plans
- − Terminal-first workflow has a learning curve
OpenAI Codex
- + Parallel cloud agents
- + Automatic PR reviews
- + CLI, IDE extension and ChatGPT share one account
- − Requires a ChatGPT plan
- − Cloud tasks need environment setup
Which should you choose?
Choose Claude Code if…
- You want a terminal-first agent with deep local codebase work
- You already pay for Claude
- You rely on hooks, subagents and MCP plugins
Choose OpenAI Codex if…
- You want cloud tasks that keep running and parallel agents
- You already pay for ChatGPT
- You want automatic PR reviews
Our verdict
Both start at $20/mo bundled with the vendor's chat subscription, so the deciding factor is usually which ecosystem you already pay for and where you want the agent to run. Choose Codex if cloud, parallel tasks and PR reviews matter most; choose Claude Code if you want a strong local, terminal-first agent you can extend with hooks and plugins.
FAQ
Do I need a separate subscription for Codex?
No. OpenAI says Codex is included in ChatGPT plans (Plus, Pro, Business).
Do I need a separate subscription for Claude Code?
It's included with Claude's paid plans (Pro and Max).
Sources (checked Oct 16, 2026): openai.com/codex/ · claude.com/pricing. Pricing changes often — confirm on the vendor's site. Ratings are preliminary editorial opinions; how we rate.