Augment Code vs Codex: Side-by-Side Comparison 2026
Augment Code vs Codex comparison 2026. Side-by-side features, pricing & capabilities.
Augment Code is an editor extension from Augment — context-aware ai coding with deep project understanding. Codex is an AI agent and a CLI-based coding agent from OpenAI — asynchronous autonomous coding agent.
Augment Code
Augment Code — AI Code Assistant from Augment. Context-Aware Agent.
- ✓ Code completions
- ✓ AI chat
- ✓ Agentic mode
- ✓ Multi-file editing
- ✓ Test generation
Free / $20/mo · 5 plans
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 · 6 plans
| Feature | Augment Code | Codex |
|---|---|---|
| Category | Extension | Agent / CLI |
| Starting Price | Free | Free |
| Model Family | Multi-model | GPT / Codex |
| Terminal Commands | — | ✓ |
| Open Source | No | Yes (CLI) |
Pricing verified Feb 25, 2026. Augment Code pricing | Codex pricing
Key Differences
- Category: Augment Code is an editor extension; Codex is an AI agent and a CLI-based coding agent.
- Starting price: Augment Code starts at $20/mo; Codex starts at $8/mo.
- Model family: Augment Code uses Multi-model; Codex uses GPT / Codex.
- Open source: Augment Code: No. Codex: Yes (CLI).
- Bring your own key: Codex supports BYOK; Augment Code does not.
- Platforms: Augment Code runs on Desktop; Codex runs on Linux, Web, Windows (experimental), macOS.
- Provider: Augment Code is built by Augment; Codex is built by OpenAI.
- Capabilities: Codex has terminal commands.
Which Should You Choose?
Choose Augment Code if you want 200K token Context Engine for deep project understanding. Choose Codex if you want asynchronous coding tasks you can fire off and review when ready. Read our full reviews to see which fits your workflow.