Codex vs Google Antigravity: Side-by-Side Comparison 2026
Codex vs Google Antigravity comparison 2026. Side-by-side features, pricing & capabilities.
Codex is an AI agent and a CLI-based coding agent from OpenAI — asynchronous autonomous coding agent. Google Antigravity is an AI IDE from Google — ai-native cloud ide.
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
Google Antigravity
Google's AI-native IDE built on a heavily modified fork of VS Code with Gemini built in. Free during preview with rate limits.
- ✓ Code completions
- ✓ AI chat
- ✓ Agentic mode
- ✓ Multi-file editing
- ✓ Terminal commands
Free / $19.99/mo · 3 plans
| Feature | Codex | Google Antigravity |
|---|---|---|
| Category | Agent / CLI | AI IDE |
| Starting Price | Free | Free |
| Model Family | GPT / Codex | Gemini |
| Open Source | Yes (CLI) | No |
Pricing verified Feb 25, 2026. Codex pricing | Google Antigravity pricing
Key Differences
- Category: Codex is an AI agent and a CLI-based coding agent; Google Antigravity is an AI IDE.
- Starting price: Codex starts at $8/mo; Google Antigravity starts at $19.99/mo.
- Model family: Codex uses GPT / Codex; Google Antigravity uses Gemini.
- Open source: Codex: Yes (CLI). Google Antigravity: No.
- Bring your own key: Codex supports BYOK; Google Antigravity does not.
- Platforms: Codex runs on Linux, Web, Windows (experimental), macOS; Google Antigravity runs on ChromeOS, Linux, Windows, macOS.
- Provider: Codex is built by OpenAI; Google Antigravity is built by Google.
Which Should You Choose?
Choose Codex if you want asynchronous coding tasks you can fire off and review when ready. Choose Google Antigravity if you want an AI-native IDE for professional development. Read our full reviews to see which fits your workflow.