Google Antigravity vs Codex (OpenAI)
Which one should you pick? Here's the full breakdown.
Google Antigravity
Google's agent-first AI IDE -- deploys up to 5 autonomous coding agents in parallel on a VS Code fork
Powered by Gemini 3.1 Pro / Claude Opus 4.6 / GPT-OSS 120B (multi-model)
Codex (OpenAI)
OpenAI's cloud-based coding agent -- runs parallel tasks, proposes PRs, and lives inside ChatGPT
Powered by GPT-5.3-Codex / GPT-5.4
| Category | Google Antigravity | Codex (OpenAI) |
|---|---|---|
| Ease of Use | 8.0 | 8.0 |
| Output Quality | 8.5 | 8.0 |
| Value | 6.0 | 8.0 |
| Features | 9.5 | 9.0 |
| Overall | 8.0 | 8.3 |
Pricing Comparison
| Feature | Google Antigravity | Codex (OpenAI) |
|---|---|---|
| Free Tier | Yes | Yes |
| Starting Price | $0 | $0 |
Benchmark Head-to-Head
GPT-5.3-Codex benchmarks — Google Antigravity has no published benchmarks
| Benchmark | Description | Score |
|---|---|---|
| SWE-bench | Real GitHub issue fixing | 72% |
| HumanEval | Python code generation | 95% |
Which Should You Pick?
Pick Google Antigravity if...
Developers working on large, multi-file projects who want to parallelize their workflow. If you regularly work on 3-5 tasks simultaneously (fix a bug, add a feature, write tests, refactor), Antigravity's multi-agent architecture is unmatched.
Visit Google AntigravityPick Codex (OpenAI) if...
- ✓Better value for money (8/10)
Developers already paying for ChatGPT Plus who want a coding agent at no extra cost. Especially good for parallel task execution -- assign multiple bug fixes or feature branches and let Codex work them simultaneously.
Visit Codex (OpenAI)Our Verdict
Codex (OpenAI) edges out Google Antigravity with a 8.3 vs 8.0 overall score. Both are solid picks, but Codex (OpenAI) has the advantage in value.