What each product is
Google Antigravity is available as the Antigravity App, the Antigravity CLI (agy), extensions for VS Code, JetBrains IDEs, Visual Studio, Zed and Xcode, a standalone Antigravity IDE, and a Python SDK. Agents work in Projects in either Local mode or an isolated Git worktree, and proposed changes go through an Artifact Review step.
OpenAI's Codex comes with ChatGPT plans. On Plus and higher it is available on the web, in the CLI, in the IDE extension and on iOS, along with the ChatGPT desktop app for local chats. The Codex CLI is open source on GitHub, and with an API key you can use Codex in the CLI, SDK or IDE extension at API pricing.
Local versus cloud execution
Codex Cloud runs coding tasks in cloud environments you configure with repositories, setup scripts, network rules and secrets. Each task has its own workspace and can keep working while your computer is asleep. You review the changed files and test results, ask for follow-ups, and commit or open a pull request. API-key users do not get cloud features.
Antigravity's documented workflow is mainly local: agents operate on your folders or a Git worktree, /goal runs a task to completion without pausing, and /schedule runs one-time or recurring tasks. Its pricing page names Antigravity App, CLI and IDE extensions access for Google Cloud customers.
Integrations and customization
Codex's feature table lists AGENTS.md instructions, skills, plugins, connectors, MCP, subagents and custom agents, worktrees, sandboxing and permission controls, and local code review with /review. Cloud integrations include GitHub issue and PR delegation with @codex, automatic PR reviews, and Slack and Linear.
Antigravity offers Marketplace plugins through /plugin, browser debugging and research through /browser, requirement interviews through /grill-me, and SDK features such as declarative tool policies, custom tools and skills, and MCP integration. Sign-in supports personal Google accounts, Gemini Enterprise (Preview), Gemini API keys and Agent Platform (Preview).
Pricing and access
Antigravity Individual is $0/month with basic weekly rate limits, unlimited Tab completions and unlimited Command requests. Google AI Pro raises limits and adds a flexible AI credit pool, and Google AI Ultra costs $99.99/month (5x AI Pro usage) or $199.99/month (20x). Business access is through Google Cloud, with Gemini Enterprise Standard and Plus listed from $30 per seat per month for eligible customers.
Codex: Free ($0) and Go ($8/month) include GPT-6 Luna in the desktop app, subject to rollout. Plus ($20/month) adds the web, CLI, IDE extension and iOS surfaces plus cloud integrations. Pro costs $100, $200 or $500 a month, with Ultrafast mode on the $500 tier. Business is $20 per user per month billed annually for 2 or more users ($25 billed monthly), Enterprise and Edu add SCIM, EKM and audit logs, and API-key usage is billed at API rates.
Who should pick which
- Pick Antigravity for a $0 start, Google AI or Gemini Enterprise alignment, or agents inside Visual Studio, Zed or Xcode.
- Pick Codex if your team lives in GitHub and wants cloud tasks, @codex PR delegation, automatic reviews and Slack or Linear hand-offs.
- For CI automation, Codex's API-key mode works in shared environments without cloud features.
The Bottom Line
Antigravity is the cheaper on-ramp, with wide editor coverage and a Google-native identity and billing path. Codex is the stronger choice for asynchronous cloud work tied to GitHub, bundled with ChatGPT plans. Choose by where your code lives and which subscription you already pay for.
