Codex vs Devin: Side-by-Side Comparison 2026
Codex vs Devin comparison for 2026. Features, pricing, AI capabilities, and editor support analyzed side by side to help you choose the right coding tool for your workflow.
Codex is an AI agent and a CLI-based coding agent from OpenAI, asynchronous autonomous coding agent. Devin is an AI agent from Cognition, fully autonomous ai software engineer.
Codex🏆 Approved
OpenAI's autonomous coding agent. Available via web, desktop app (macOS), CLI (macOS/Linux/Windows), and VS Code extension.
- ✓ Code completions
- ✓ AI chat
- ✓ Agentic mode
- ✓ Multi-file editing
- ✓ Terminal commands
Free / $8/mo · 7 plans
Devin
Autonomous AI coding agent by Cognition. Handles full development tasks end-to-end with its own shell, browser, and editor. One subscription covers Devin and Devin Desktop, the IDE formerly known as Windsurf.
- ✓ AI chat
- ✓ Agentic mode
- ✓ Multi-file editing
- ✓ Terminal commands
- ✓ Test generation
Free / $20/mo · 5 plans
| Feature | Codex | Devin |
|---|---|---|
| Category | Agent / CLI | Agent |
| Starting Price | Free | Free |
| Model Family | GPT / Codex | Proprietary |
| Open Source | Yes (CLI) | No |
Pricing verified Jun 5, 2026. Codex pricing | Devin pricing
Key Differences
- Category: Codex is an AI agent and a CLI-based coding agent; Devin is an AI agent.
- Starting price: Codex starts at $8/mo; Devin starts at $20/mo.
- Model family: Codex uses GPT / Codex; Devin uses Proprietary.
- Open source: Codex: Yes (CLI). Devin: No.
- Bring your own key: Codex supports BYOK; Devin does not.
- Platform coverage: Codex adds macOS, Linux, Windows (experimental).
Which Should You Choose?
Choose Codex if you want asynchronous coding tasks you can fire off and review when ready. Choose Devin if you want fully autonomous engineering tasks with minimal supervision. Read our full reviews to see which fits your workflow.