Claude Code vs Codex in 2026: pick Claude Code if you already pay for Claude
Claude Code vs Codex is Anthropic's coding agent against OpenAI's. Both read your repo, edit files and run commands, and both come with a chat subscription. Claude Code is included from Claude Pro at $20 a month. Codex has a free tier in the desktop app, and ChatGPT Plus at $20 a month adds Codex on the web, in the CLI, in the IDE extension and on iOS.
Facts and prices checked on against the sources listed below.
Quick verdict
Claude Code
Starts atPro $20/mo
Pick Claude Code if you already pay for Claude, want one usage pool for chat and coding, and like to script the agent with claude -p, hooks and skills.
OpenAI Codex
Starts atPlus $20/mo
Pick Codex if you already pay for ChatGPT, want a free way to try an agent first, or want a Pro plan with no five-hour limit.
Claude Code vs OpenAI Codex at a glance
| Feature | Claude Code | OpenAI Codex |
|---|---|---|
| Maker | Anthropic | OpenAI |
| Where it runs | Terminal, VS Code, JetBrains, desktop app and web | Web, CLI, IDE extension and iOS on Plus; desktop app |
| Free access | Not in Claude's free plan | Free and Go ($8 a month): GPT-6 Luna in the desktop app, subject to rollout |
| Entry paid plan | Pro, $20 a month ($17 a month billed yearly) | Plus, $20 a month |
| Heavier use | Max $100 and Ultra $200 a month | Pro at $100, $200 or $500 a month |
| Teams | Team standard seat $20 billed yearly, $25 monthly | Business $20 per user billed yearly, $25 monthly, 2+ users |
| API key use | Pay-as-you-go API credits through a Console account | CLI, SDK or IDE extension at API prices, no cloud features |
| Automation | claude -p, GitHub Actions, GitLab CI/CD, cloud scheduled tasks | Automatic code review and Slack on Plus; API key for CI |
Pricing and plans (checked Oct 2026)
Both tools come with a chat subscription, so the real question is which subscription you want to pay for.
Claude Code is included in every paid Claude plan. Pro costs $20 a month, or $17 a month billed yearly ($200 up front). Max costs $100 a month with 5x Pro usage, and Ultra costs $200 a month with 10x Pro usage a week and no five-hour limit for verified accounts. Claude's free plan does not include Claude Code. Your chats and your coding sessions draw from the same usage pool.
Codex has more entry points. The Free plan and Go ($8 a month) give you GPT-6 Luna in the desktop app, subject to rollout. Plus ($20 a month) adds Codex on the web, in the CLI, in the IDE extension and on iOS, plus cloud integrations such as automatic code review and Slack. Pro comes in $100, $200 and $500 versions, and OpenAI says Pro plans currently have no five-hour limit.
For teams, Claude Team standard seats cost $20 a seat a month billed yearly ($25 monthly). ChatGPT Business costs $20 per user a month billed yearly for 2 or more users ($25 monthly).
Where each one runs
Claude Code runs in the terminal, as VS Code and JetBrains extensions, in the Claude desktop app and on the web. The desktop app can run several sessions side by side and schedule recurring tasks, and cloud scheduled tasks keep running when your computer is off.
Codex runs on the web, in the CLI, in an IDE extension, on iOS and in the desktop app. Cloud tasks run on OpenAI's machines and may use more of your allowance than local messages.
Automation and API keys
Both can run without a person at the keyboard. Claude Code has a headless mode (claude -p) that you can pipe logs or diffs into, and its docs cover GitHub Actions and GitLab CI/CD. OpenAI recommends an API key for Codex in shared environments such as CI: that works in the CLI, SDK and IDE extension and bills at API prices, but you lose the cloud features.
If you prefer to pay per token, see our Claude API pricing and OpenAI API pricing pages.
When to pick Claude Code
- You already pay for Claude and want coding in the same plan.
- You want to customise the agent with CLAUDE.md, skills, hooks and MCP servers.
- You want scheduled tasks that run in the cloud.
When to pick Codex
- You want to try an agent for free first, in the desktop app.
- You already pay for ChatGPT Plus or Business.
- You run long sessions and want a Pro plan with no five-hour limit.
Neither choice locks you in: both work on a normal Git repo, so you can try one for a month and switch. For an editor-based option, read Claude Code vs Cursor.
FAQ
Is Codex free?
Partly. At the time of writing, OpenAI's Codex pricing page lists a Free plan and Go at $8 a month with GPT-6 Luna in the desktop app, subject to rollout. Codex on the web, in the CLI and in the IDE extension starts with Plus at $20 a month.
Is Claude Code free?
No. Claude Code is included in every paid Claude plan, from Pro at $20 a month, and shares that plan's usage limits with chat. You can also pay for it with API credits through a Console account.
Which one has higher usage limits?
Both use limits that reset over five hours, plus weekly limits. OpenAI estimates 15 to 160 local messages per five hours on GPT-6.1 Sol for Plus, and says Pro plans currently have no five-hour limit. Claude Max gives 5x Pro usage, and Ultra has no five-hour limit for verified accounts and 10x Pro usage a week.
Can I run Claude Code or Codex in CI?
Yes. Claude Code documents GitHub Actions and GitLab CI/CD for code review and issue triage, and runs headless with claude -p. OpenAI recommends an API key for Codex in shared environments such as CI, billed at API prices.
Upcoming and beta tools in this space
Not launched yet, listed on TeaserTrack. Early access, waitlists and launch dates are on each tool page.
Sources, checked October 30, 2026
Prices and plans change often. If something here is out of date, tell us through the contact page.