Comparison · AI coding assistants
Claude Code vs OpenAI Codex: which is better in 2026?
Claude Code ranks higher in our list of AI coding assistants (#1 against #6, score 93.0 against 81.0).
Choose Claude Code if you want
Terminal-first agentic coding inside a Claude plan.
Agentic coding from the terminal, IDE, Slack or the web, included in Pro and Max. It has no free tier, and heavier daily use points to the Max plan.
Choose OpenAI Codex if you want
Open-source terminal agent in the OpenAI ecosystem.
An Apache 2.0 terminal agent from OpenAI that runs on the user's computer. The pages checked tie model access to OpenAI sign-in, and it offers no graphical interface.
The main differences
- Only Claude Code runs on Web.
- OpenAI Codex is open source; Claude Code is not.
- OpenAI Codex can be used for free; Claude Code requires payment.
Side by side
 Claude Code |  OpenAI Codex | |
|---|---|---|
| Score | 93.0 | 81.0 |
| Rank in list | #1 of 7 | #6 of 7 |
| Price | SubscriptionIncluded in Claude Pro and Max plans; no separate free tier is listed | Free and open sourceOpen-source CLI under Apache-2.0; README covers use with a ChatGPT plan |
| Free to use | No | Yes |
| Open source | No | Yes |
| Platforms | Command lineWebCommand line, Web | Command lineCommand line |
| Made by | Anthropic | OpenAI |
| Interface | Terminal, IDE, Slack and web | Terminal |
| Model choice | Anthropic models | OpenAI models |
| Commits to git | Not listed | Not listed |
| Best for | Terminal-first agentic coding inside a Claude plan | Open-source terminal agent in the OpenAI ecosystem |
| Strengths |
|
|
| Limits |
|
|
| Links | Visit site | Visit site |
Questions about Claude Code vs OpenAI Codex
- Is Claude Code better than OpenAI Codex?
- Claude Code ranks higher in our list of AI coding assistants (#1 against #6, score 93.0 against 81.0). Claude Code is best for: terminal-first agentic coding inside a Claude plan. OpenAI Codex is best for: open-source terminal agent in the OpenAI ecosystem.
- Which is cheaper, Claude Code or OpenAI Codex?
- Claude Code: Included in Claude Pro and Max plans; no separate free tier is listed. OpenAI Codex: Open-source CLI under Apache-2.0; README covers use with a ChatGPT plan.
- Do Claude Code and OpenAI Codex run on the same platforms?
- Claude Code supports Command line, Web. OpenAI Codex supports Command line.