Amazon Q Developer vs Codex: Side-by-Side Comparison 2026
Amazon Q Developer vs Codex comparison 2026. Side-by-side features, pricing & capabilities.
| Feature | Amazon Q Developer | Codex |
|---|---|---|
| Category | Extension | Agent |
| Starting Price | Free | Free |
| Model Family | Claude | GPT / Codex |
| Context Window | 1M (via Claude Sonnet 4.5) | 400K |
| Code Completion | ✓ | ✓ |
| Chat | ✓ | ✓ |
| Inline Editing | ✓ | ✓ |
| Agentic Mode | ✓ | ✓ |
| Multi-File Editing | ✓ | ✓ |
| Terminal Commands | ✓ | ✓ |
| Browser Use | ✗ | ✗ |
| Test Generation | ✓ | ✓ |
| Debugging | ✓ | ✓ |
| Refactoring | ✓ | ✓ |
| Code Review | ✓ | ✓ |
| PR Review | ✗ | ✓ |
| Documentation | ✓ | ✓ |
| Image to Code | ✗ | ✗ |
| Voice Input | ✗ | ✗ |
| App Generation | ✗ | ✓ |
| Deployment | ✗ | ✗ |
| Git Integration | ✓ | ✓ |
| Supported IDEs | VS Code, JetBrains, AWS Cloud9, Lambda Console, CloudShell | Codex App, VS Code, CLI |
| Open Source | No | Yes (CLI) |
Pricing verified 2026-02-05. Amazon Q Developer pricing | Codex pricing
Overview
Amazon Q Developer is editor extension from Amazon (AWS). Codex is ai agent from OpenAI. Both tools are actively maintained as of 2026.
Amazon Q Developer: What You Get
Amazon Q Developer — AI Code Assistant from Amazon (AWS). IDE Integration.
- Code completions
- AI chat
- Agentic mode
- Multi-file editing
- Terminal commands
- Test generation
- Debugging
- Code review
- Git integration
Pricing: Free / $19/mo. 2 plans available.
Models: Claude Sonnet 4.5
Codex: What You Get
Codex — AI Coding Agent from OpenAI. App / CLI / IDE.
- Code completions
- AI chat
- Agentic mode
- Multi-file editing
- Terminal commands
- Test generation
- Debugging
- Code review
- Git integration
- App generation
Pricing: Free / $8/mo. 6 plans available.
Models: GPT-5.3-Codex, Codex-mini-latest
Key Differences
- Category: Amazon Q Developer is editor extension, Codex is ai agent.
- Model family: Amazon Q Developer uses Claude; Codex uses GPT / Codex.
Which Should You Choose?
Choose Amazon Q Developer if you want AI coding assistance in your existing editor. Choose Codex if you want Codex handles multi-step tasks independently. Both tools are strong options — the right choice depends on your workflow and priorities.
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