---
title: "Google Antigravity vs OpenAI Codex: Which is Better in 2026? | App Stack Builder"
description: "Google Antigravity vs OpenAI Codex compared for 2026 — pricing, free tiers, features, pros & cons. See which ai coding assistant tool is the better fit for your startup."
source: https://appstackbuilder.com/compare/google-antigravity-vs-openai-codex
retrieved: 2026-09-12
---

AI Coding Assistant

# Google Antigravity vs OpenAI Codex: Which is Better in 2026?

Choosing between [Google Antigravity](https://appstackbuilder.com/tools/google-antigravity) and [OpenAI Codex](https://appstackbuilder.com/tools/openai-codex)? Both are popular ai coding assistant tools. Below we compare them on pricing, free tiers, features, and pros & cons so you can pick the right fit for your stack.

Quick verdict

Both Google Antigravity and OpenAI Codex are strong ai coding assistant choices. The right pick comes down to your specific feature needs, existing stack, and team preferences. In our catalog, Google Antigravity rates slightly higher (4.7 vs 4.5 out of 5).

## Google Antigravity vs OpenAI Codex — Side by Side

|                | Google Antigravity                        | OpenAI Codex                        |
| -------------- | ----------------------------------------- | ----------------------------------- |
| Category       | AI Coding Assistant                       | AI Coding Assistant                 |
| Pricing        | Free                                      | Free · paid from $20/mo             |
| Starting price | Free tier available                       | Free tier available                 |
| Free tier      | ✓                                         | ✓                                   |
| Rating         | 4.7                                       | 4.5                                 |
| Best for       | AI Coding Assistant — google, antigravity | AI Coding Assistant — openai, codex |

## Pros & Cons

![Google Antigravity](https://appstackbuilder.com/google-antigravity.svg)

[Google Antigravity](https://appstackbuilder.com/tools/google-antigravity)

* ✓Extremely generous free plan
* ✓Access to multiple leading AI models
* ✓Unlimited tab completions
* ✓Deep Google ecosystem integration
* ✓Scales from solo to enterprise
* ✗Pricing for paid plans is indirect (via Google One/Workspace)
* ✗Enterprise plan not yet available
* ✗Limited transparency on exact rate limits
* ✗Still in public preview - may have bugs and security considerations

![OpenAI Codex](https://appstackbuilder.com/openai.svg)

[OpenAI Codex](https://appstackbuilder.com/tools/openai-codex)

* ✓Powerful agentic, multi-file coding
* ✓Open-source CLI is free
* ✓Backed by GPT-5-Codex models
* ✓CLI, IDE, and cloud options
* ✗Best limits require ChatGPT Pro ($200/mo)
* ✗API usage costs add up
* ✗Less editor-integrated than Cursor

## Key Features Compared

### Google Antigravity

* ✓Access to Gemini 3 Pro & Flash
* ✓Access to Claude Sonnet & Opus 4.5
* ✓Access to GPT-OSS-120B
* ✓Unlimited tab completions
* ✓Unlimited command requests
* ✓Agent Manager for multi-agent workflows

### OpenAI Codex

* ✓Open-source terminal agent
* ✓Reads, edits & runs code
* ✓Bring your own OpenAI API key
* ✓Works locally

### Choose Google Antigravity if…

* ✓You want a free tier to validate before paying.
* ✓Extremely generous free plan
* ✓Access to multiple leading AI models
* ✓Unlimited tab completions
[Google Antigravity review & pricing ](https://appstackbuilder.com/tools/google-antigravity)

### Choose OpenAI Codex if…

* ✓You want a free tier to validate before paying.
* ✓Powerful agentic, multi-file coding
* ✓Open-source CLI is free
* ✓Backed by GPT-5-Codex models
[OpenAI Codex review & pricing ](https://appstackbuilder.com/tools/openai-codex)

## Frequently Asked Questions

Is Google Antigravity better than OpenAI Codex?⌄

Both Google Antigravity and OpenAI Codex are strong ai coding assistant choices. The right pick comes down to your specific feature needs, existing stack, and team preferences. In our catalog, Google Antigravity rates slightly higher (4.7 vs 4.5 out of 5).

What is the difference between Google Antigravity and OpenAI Codex?⌄

Google Antigravity — AI-powered agent-first IDE from Google with autonomous AI agents, generous free tier, and multi-model support. OpenAI Codex — OpenAI’s agentic coding tool — a terminal CLI, IDE extension, and cloud agent powered by GPT-5-Codex models. Both are ai coding assistant tools; the comparison table above breaks down pricing, free tiers, and what each is best for.

Google Antigravity vs OpenAI Codex: which is cheaper?⌄

Google Antigravity pricing: Free. OpenAI Codex pricing: Free · paid from $20/mo. Confirm current pricing on each tool's official site, as plans change.

Which is rated higher, Google Antigravity or OpenAI Codex?⌄

In our catalog, Google Antigravity rates 4.7 out of 5 and OpenAI Codex rates 4.5 out of 5, so Google Antigravity has a slight edge on reviews.

See more options in our guide to the [best ai coding assistant tools for startups](https://appstackbuilder.com/categories/coding-assistant).

## Still not sure which to pick?

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