OpenAI Codex vs Claude Code
A side-by-side comparison of capabilities, autonomy, integrations, and pricing to help you choose.
Short answer: choose OpenAI Codex if you want openai's coding agent that writes, tests, and reviews code in the cloud, cli, and ide (Supervised agent, subscription); choose Claude Code if you want anthropic's agentic coding agent that lives in your terminal (Supervised agent, subscription).
| OpenAI Codex | Claude Code | |
|---|---|---|
| What it is | OpenAI's coding agent that writes, tests, and reviews code in the cloud, CLI, and IDE | Anthropic's agentic coding agent that lives in your terminal |
| Type | product-with-agents | agent |
| Autonomy | Supervised agent | Supervised agent |
| Pricing | subscription · Included in ChatGPT plans (Free, Go $8/mo, Plus $20/mo, Pro from $100/mo); CLI also usable with an OpenAI API key (usage-based) | subscription · Included in Claude Pro ($20/mo); also pay-as-you-go via API tokens |
| Best for | developers, smb, enterprise | developers, enterprise, mid-market |
| Deployment | saas, api | saas, api |
| Modalities | text, code | text, code, api |
| Models | gpt, proprietary | claude |
| Protocols | mcp, function-calling, rest-api | mcp, rest-api, function-calling |
| Integrations | GitHub, Slack, Linear, VS Code, JetBrains, Xcode | GitHub, GitLab, VS Code, JetBrains IDEs, GitHub Actions, MCP servers |
| Capabilities | 5 documented | 4 documented |
OpenAI Codex
- +One coding agent across cloud, terminal, IDE, and GitHub from a single account
- +Cloud tasks run in parallel in isolated sandboxes and return reviewable diffs and test logs
- +Open-source CLI with configurable sandbox and approval modes, plus MCP support
- -Agentic tasks require human review and approval; not a hands-off autonomous engineer
- -Cloud usage is rate-limited per 5-hour window and scales with plan tier
Claude Code
- +True terminal-native agent: reads, edits, runs, and commits across a whole codebase rather than autocompleting lines
- +Flexible autonomy, from per-action approval to auto mode to fully headless runs for CI
- +Deep ecosystem: MCP support, subagents, plugins, GitHub Actions, and IDE extensions, plus a public Agent SDK
- -API-token usage on heavy tasks can get expensive and hard to predict
- -Locked to Anthropic's own Claude models (no model choice)
Which should you choose?
OpenAI Codex is openai's coding agent that writes, tests, and reviews code in the cloud, cli, and ide, best for developers, smb, enterprise. Claude Code is anthropic's agentic coding agent that lives in your terminal, best for developers, enterprise, mid-market. The right choice depends on the autonomy level you want, your existing integrations, and your budget, all compared above.
This comparison is generated from the sourced OpenAI Codex and Claude Code profiles. Open either profile to review its evidence and last-reviewed date.