// head_to_head
Google Antigravity vs OpenAI Codex
Plans, included models and benchmark scores for Google Antigravity and OpenAI Codex, side by side — and which to pick for what.
All coding toolsPlans checked 2026-10-27
Google Antigravity: Gemini CLI was replaced by Antigravity CLI for unpaid and Google One users on June 18, 2026.
Which to choose
- You want the strongest model for coding work: OpenAI Codex. Its best included model, GPT-6.1 Sol, scores 96.0 on LiveBench coding against 89.7 for Gemini 4 Argon on Google Antigravity.
- You want the strongest model for long-horizon agentic work: OpenAI Codex. Its best included model, GPT-6 Astra, scores 77.5 on LiveBench long-horizon agentic against 61.2 for Gemini 4 Argon on Google Antigravity.
- You want the lowest paid entry price: OpenAI Codex. OpenAI Codex Go is $8/mo against $19.99/mo for Google Antigravity Google AI Pro.
- You want to pay per token with your own API key: OpenAI Codex. OpenAI Codex accepts your own API key, so cost tracks usage instead of a plan’s limits.
Side by side
| Google Antigravity | OpenAI Codex | |
|---|---|---|
| Made by | OpenAI | |
| Where you use it | Agent-first IDE and CLI | Terminal, IDE extension, desktop app and cloud tasks |
| Free plan | Yes | Yes |
| Paid from | $19.99/mo · Google AI Pro | $8/mo · Go |
| Best coding model | 89.7Gemini 4 Argon | 96.0GPT-6.1 Sol |
| Best agentic model | 61.2Gemini 4 Argon | 77.5GPT-6 Astra |
| Own API key | No | Yes |
| Open source | No | No |
Google Antigravity plans and models
| Plan | Price | What you get |
|---|---|---|
| Individuals | Free | Basic weekly rate limits; unlimited tab completionsModels not named by the vendor |
| Google AI Pro | $19.99/mo$199.99/yr | Expanded rate limits and AI credit pool |
| Google AI Ultra | from $99.99/mo | Higher rate limits (5× and 20× tiers) |
| Businessteam | $30/moper seat · from | Via Google Cloud; pay-as-you-go also availableModels not named by the vendor |
| Model | Coding | Long-horizon agentic | Same work via API |
|---|---|---|---|
| Gemini 4 Argon | 89.7 | 61.2 | $1,336/mo |
OpenAI Codex plans and models
| Plan | Price | What you get |
|---|---|---|
| Free | Free | GPT-6 Luna in the desktop app, subject to rollout |
| Go | $8/mo | GPT-6 Luna in the desktop app, subject to rollout |
| Plus | $20/mo | About 15–160 GPT-6.1 Sol messages per five hours; weekly limits may apply |
| Pro | from $100/mo$200 and $500 tiers | No five-hour limit |
| Businessteam | $25/moper user · $20 billed annually | Same five-hour estimates as Plus |
| Model | Coding | Long-horizon agentic | Same work via API |
|---|---|---|---|
| GPT-6.1 Sol | 96.0 | 68.7 | $1,336/mo |
| GPT-6.1 Terra | 94.3 | 48.6 | $668.00/mo |
| GPT-6 Astra | 93.7 | 77.5 | $6,960/mo |
| GPT-6 Luna | 84.5 | 30.9 | $69.60/mo |
Google Antigravity vs OpenAI Codex FAQ
Is Google Antigravity or OpenAI Codex cheaper?
OpenAI Codex has the lower entry price: Google Antigravity Google AI Pro is $19.99/mo and OpenAI Codex Go is $8/mo.
Which is better if you want the strongest model for coding work?
OpenAI Codex. Its best included model, GPT-6.1 Sol, scores 96.0 on LiveBench coding against 89.7 for Gemini 4 Argon on Google Antigravity.
Which is better if you want the strongest model for long-horizon agentic work?
OpenAI Codex. Its best included model, GPT-6 Astra, scores 77.5 on LiveBench long-horizon agentic against 61.2 for Gemini 4 Argon on Google Antigravity.
Do Google Antigravity and OpenAI Codex have free plans?
Google Antigravity: yes. OpenAI Codex: yes.
Where these numbers come from
- Plans and prices — each vendor's own pricing page, checked 2026-10-27: Google Antigravity, OpenAI Codex. Usage allowances change often; check before you buy.
- Model scores — LiveBench coding and long-horizon agentic categories for the models each plan includes, live from the same data as the leaderboard. A tool's own agent loop matters too; these scores rate the model, not the tool.
- “Same work via API” — a heavy coding-agent month (40K tokens in, 4K out, 20K requests, 70% cached input) at OpenRouter list price, for comparing a subscription against paying per token.