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Google Antigravity vs OpenAI Codex

Features, pricing, ratings, and pros and cons, side by side.

Google Antigravity logo

Google Antigravity

Google's agent-first platform for building software with parallel AI coding agents

Freemium
Visit websiteView details
OpenAI Codex logo

OpenAI Codex

OpenAI's coding agent that writes, reviews and runs code from terminal, IDE, desktop or cloud

Freemium
Visit websiteView details

Verdict

Google Antigravity and OpenAI Codex are both Coding AI tools. OpenAI Codex scores higher in FinderAtlas's editorial review (8.5 vs 8.3 out of 10), led by ease of use. Both have a free plan or trial. Only OpenAI Codex is available on Web.

Best overall

OpenAI Codex

  • Software developers
  • Engineering teams
  • Enterprise engineering organizations
  • Open-source maintainers

Choose Google Antigravity if

  • You want a tool built for parallel coding agents, legacy migrations, automated testing, incident triage, prototyping.
  • Free Individual plan with unlimited Tab completions and Command requests.
  • Offers Gemini, Claude and GPT-OSS models in one tool.

Choose OpenAI Codex if

  • You want a tool built for delegating coding tasks to an agent.
  • Included with ChatGPT plans, with a free tier and an $8 Go tier.
  • Open-source CLI under the Apache-2.0 license.
Best for beginners
Google Antigravity
Best for business
OpenAI Codex

Features

19 features compared.

  • Antigravity App
    Google Antigravity
    Available
    OpenAI Codex
    Not available
  • Antigravity CLI
    Google Antigravity
    Available
    OpenAI Codex
    Not available
  • Antigravity IDE
    Google Antigravity
    Available
    OpenAI Codex
    Not available
  • Background Subagents
    Google Antigravity
    Available
    OpenAI Codex
    Not available
  • Verification Artifacts
    Google Antigravity
    Available
    OpenAI Codex
    Not available
  • Multi-Model Support
    Google Antigravity
    Available
    OpenAI Codex
    Not available
  • Extensibility
    Google Antigravity
    Available
    OpenAI Codex
    Not available
  • Antigravity SDK
    Google Antigravity
    Available
    OpenAI Codex
    Not available
  • Security Controls
    Google Antigravity
    Available
    OpenAI Codex
    Not available
  • Codex CLI
    Google Antigravity
    Not available
    OpenAI Codex
    Available
  • IDE extension
    Google Antigravity
    Not available
    OpenAI Codex
    Available
  • Desktop app
    Google Antigravity
    Not available
    OpenAI Codex
    Available
  • Cloud tasks
    Google Antigravity
    Not available
    OpenAI Codex
    Available
  • Code review
    Google Antigravity
    Not available
    OpenAI Codex
    Available
  • Non-interactive mode
    Google Antigravity
    Not available
    OpenAI Codex
    Available
  • MCP, skills and plugins
    Google Antigravity
    Not available
    OpenAI Codex
    Available
  • Subagents and web search
    Google Antigravity
    Not available
    OpenAI Codex
    Available
  • Session resume and images
    Google Antigravity
    Not available
    OpenAI Codex
    Available
  • Mobile remote control
    Google Antigravity
    Not available
    OpenAI Codex
    Available

Pricing

Plans as listed by each vendor. Check their sites for current prices.

  • Pricing model
    Google Antigravity
    Freemium
    OpenAI Codex
    Freemium
  • Free plan
    Google Antigravity
    Yes
    OpenAI Codex
    Yes
  • Starting price
    Google Antigravity
    $0
    OpenAI Codex
    $0
  • Plans
    Google Antigravity
    4 plans
    OpenAI Codex
    7 plans

Google Antigravity plans

  • Individual

    $0

    Use Antigravity without a subscription plan

    • Access to a variety of agent models
    • Unlimited Tab completions
    • Unlimited Command requests
    • Basic weekly rate limits

  • Google AI Pro

    Most popular

    $19.99/month

    Higher limits for individual developers

    • Everything in Individual
    • More rate limits
    • Flexible AI credit pool

  • Google AI Ultra

    $99.99/month

    Daily-driver access to the latest Gemini models

    • Everything in Pro
    • Even more rate limits
    • Flexible AI credit pool

  • Business (Google Cloud)

    $30/user/mo

    Organizations on Google Cloud

    • Standard or Plus seats for eligible Gemini Enterprise customers
    • spend caps
    • centralized admin controls

OpenAI Codex plans

  • Free

    $0

    Quick coding tasks

    • GPT-6 Luna in the desktop app
    • Subject to rollout

  • Go

    $8/month

    Lightweight coding tasks

    • GPT-6 Luna in the desktop app

  • Plus

    Most popular

    $20/month

    Focused coding sessions

    • Web
    • CLI
    • IDE and iOS access
    • Automatic code review and Slack
    • GPT-6.1 Sol and GPT-6 Luna
    • Can add credits

  • Pro

    $100/month

    Plans at $100, $200 or $500 per month

    • Everything in Plus
    • No five-hour limit currently
    • Ultrafast mode on the $500 plan

  • Business

    $25/user/mo

    2 or more users; $20 per user per month when billed annually

    • Desktop and mobile apps
    • Larger cloud VMs
    • Add-on credits
    • SAML SSO and MFA
    • No training on business data by default

  • Enterprise & Edu

    Custom/user/mo

    Contact sales

    • Priority request processing
    • SCIM
    • EKM and RBAC
    • User analytics
    • Compliance API audit logs
    • Retention and residency controls

  • API Key

    Pay-as-you-go/usage

    Billed at OpenAI API pricing

    • Codex in the CLI
    • SDK and IDE extension
    • No cloud features
    • Models depend on the API key

Our ratings

Scored out of 10 by the Finder Atlas editorial team. Last reviewed October 2026.

Google Antigravity
8.3overall
OpenAI Codex
8.5overall

Google Antigravity leads in 1 category and OpenAI Codex in 1.

  • Ease of Use

    OpenAI Codex leads by 0.3
    Google Antigravity
    8.0
    OpenAI Codex
    8.3

  • Feature Depth

    Google Antigravity
    8.8
    OpenAI Codex
    Not rated

  • Value for Money

    Google Antigravity leads by 0.4
    Google Antigravity
    8.4
    OpenAI Codex
    8.0

  • Performance & Speed

    Google Antigravity
    8.0
    OpenAI Codex
    Not rated

  • Documentation & Support

    Google Antigravity
    8.2
    OpenAI Codex
    Not rated

  • Code Generation

    Google Antigravity
    Not rated
    OpenAI Codex
    9.0

  • Agentic Autonomy

    Google Antigravity
    Not rated
    OpenAI Codex
    8.8

  • Ecosystem & Integrations

    Google Antigravity
    Not rated
    OpenAI Codex
    8.5

Scores weigh documented features, plan value, platform coverage, integrations and user feedback. A missing score means we have not rated that area yet.

Pros and cons

Google Antigravity

Pros

  • Free Individual plan with unlimited Tab completions and Command requests.
  • Offers Gemini, Claude and GPT-OSS models in one tool.
  • Parallel agents and background subagents in isolated Git worktrees.
  • Artifacts (plans, diffs, browser recordings) make agent output reviewable.
  • Available as app, CLI, IDE extensions and Python SDK on macOS, Windows and Linux.
  • Enterprise controls include SSO, VPC Service Controls and regional data residency.

Cons

  • Pricing page gives no numeric rate limits or credit amounts, so quotas are hard to predict.
  • Prices for Google AI Pro and Ultra are not shown on the Antigravity pricing page.
  • Weekly and five-hour limits apply, with Gemini and Claude/GPT usage tracked separately.
  • Product surfaces and release cadence are fast-moving, and some enterprise IDE features are still in Preview.

OpenAI Codex

Pros

  • Included with ChatGPT plans, with a free tier and an $8 Go tier
  • Open-source CLI under the Apache-2.0 license
  • Available in the terminal, VS Code-based editors, the ChatGPT desktop app and the cloud
  • Supports MCP, skills, plugins and subagents
  • API-key option lets teams pay at API rates instead of a subscription

Cons

  • Plus has message limits per five hours that vary widely by model
  • Cloud features are not available on the API Key plan
  • Higher usage needs Pro, which starts at $100 per month
  • Free and Go plans offer only GPT-6 Luna in the desktop app

Platforms

  • Web
    Google Antigravity
    Not supported
    OpenAI Codex
    Supported
  • Windows
    Google Antigravity
    Supported
    OpenAI Codex
    Supported
  • macOS
    Google Antigravity
    Supported
    OpenAI Codex
    Supported
  • iOS
    Google Antigravity
    Not supported
    OpenAI Codex
    Not supported
  • Android
    Google Antigravity
    Not supported
    OpenAI Codex
    Not supported
  • API
    Google Antigravity
    Supported
    OpenAI Codex
    Supported
  • Browser Extension
    Google Antigravity
    Not supported
    OpenAI Codex
    Not supported
  • Linux
    Google Antigravity
    Supported
    OpenAI Codex
    Supported
  • CLI
    Google Antigravity
    Supported
    OpenAI Codex
    Supported
  • VS Code Extension
    Google Antigravity
    Supported
    OpenAI Codex
    Supported
  • JetBrains Plugin
    Google Antigravity
    Supported
    OpenAI Codex
    Supported

Integrations

Google Antigravity

11 integrations
  • MCP
  • Git
  • Firebase
  • Android
  • Chrome DevTools
  • Flutter
  • Google Cloud
  • Google Maps
  • Visual Studio
  • Zed
  • Xcode

OpenAI Codex

8 integrations
  • GitHub
  • Slack
  • Visual Studio Code
  • Cursor
  • Windsurf
  • Xcode
  • JetBrains IDEs
  • MCP

Company

  • Company
    Google Antigravity
    Google
    OpenAI Codex
    Not listed
  • Founded
    Google Antigravity
    1998
    OpenAI Codex
    Not listed
  • Headquarters
    Google Antigravity
    Mountain View, California, USA
    OpenAI Codex
    Not listed
  • Monthly users
    Google Antigravity
    Not listed
    OpenAI Codex
    4M+ weekly users
  • Listing
    Google Antigravity
    Claimed
    OpenAI Codex
    Not claimed

Frequently asked questions

Is Google Antigravity better than OpenAI Codex?

It depends on your workflow. Google Antigravity is built for parallel coding agents, legacy migrations, automated testing, incident triage, prototyping. OpenAI Codex is built for delegating coding tasks to an agent.

What are the key feature differences between Google Antigravity and OpenAI Codex?

Google Antigravity: Google's agent-first platform for building software with parallel AI coding agents. OpenAI Codex: OpenAI's coding agent that writes, reviews and runs code from terminal, IDE, desktop or cloud.

Does Google Antigravity or OpenAI Codex have a free plan?

Yes, both do. Google Antigravity is freemium and OpenAI Codex is freemium, and each has a free plan or trial.

Which is cheaper, Google Antigravity or OpenAI Codex?

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.