Antigravity is Google's free agent-first coding editor and CLI. The agent plans, edits, runs commands and tests pages in a browser, leaving plans you can comment on. It runs on Gemini, and quotas rise with Google AI Pro or Ultra. Pick it if you already pay Google; pick OpenCode for your own model choice.
Other good fits
Teams already on Google AI Pro/Ultra or Google Cloud, who get higher limits included.
Small web pages where you want the agent to test in a browser and show its walkthrough.
+ Pros
Read pros
Antigravity is Google's coding environment built around agents. It comes as a desktop editor and a command-line tool. You describe a task, the agent writes a plan, edits files, runs commands and can drive a browser to test a web page. It leaves plans and walkthroughs you can read and comment on before you accept the result. It runs on Gemini models; third-party models are reserved for the top plan.
Pick it when…
You want to try an agent-first editor for free with a Google account.
Your organisation already uses Google AI Pro or Ultra, or Google Cloud, so the higher limits come with it.
You're building a small web page and want the agent to click through it in a browser and show you what it saw.
− Cons
Quotas are described in words, not numbers, so you only find the free limit by hitting it. The models are Google's own unless you pay for Ultra. The agent can run commands and use a browser; keep permission prompts on until you trust your setup, and work under Git.
Pick something else when…
You're following the curriculum's coding track or want to choose any model provider: OpenCode.
You want a clear price, a known allowance and a middle plan:Cursor.
You want to choose your model provider or keep code with an EU host; use OpenCode.
Workflow
Install or open a supported surface → create or open a project → describe a limited task → review the plan and permission prompts → inspect diffs, artifacts, and tests → accept, revise, or discard changes. This review did not install Antigravity or run an agent.
Higher quota, refreshed every five hours up to a weekly limit
Google AI Ultra
from €99.99 per month in Germany
Highest quota, third-party models
Organization
Google Cloud, pay per use
Through Gemini Enterprise Agent Platform
Pro and Ultra subscribers can buy AI credits beyond the quota at Google Cloud consumption prices; the per-credit price isn't on the page. The editor updates itself. The running effort is reviewing plans and diffs and deciding which terminal and browser actions the agent may take without asking.
Restrictions
Availability, supported surfaces, model access, and rate limits depend on the account and plan. Permission matching and sandbox behavior vary by operating system; documentation does not make a successful task or migration guarantee.
First project
Documentation-based suggestion — not run here.
Read first project
Build a one-page sign-up form for a lab seminar or a customer workshop.
Make an empty project folder and put it under Git.
Open it in Antigravity and check the permission settings: let the agent ask before it runs terminal commands.
Ask: "Make a single HTML page with a sign-up form for a seminar: name, email, session choice. No backend; show a thank-you message on submit. Write a plan first."
Comment on the plan, then let it build the page and test it in the browser.
Open the page yourself and fill in the form with made-up data.
Done when the page works in your own browser, you have read the walkthrough, and Git shows only the files you expected.
Links & evidence
Documentation-based · not hands-on · Sep 23, 2026
Rests on Antigravity's pricing, plans, getting-started and permissions pages and Google's Gemini subscription page (German prices), all read on 2026-09-23. Nothing was run in Antigravity for this review. Exact free-quota numbers and the per-credit price are not published.
Antigravity pricing · Sep 23, 2026 — Individual plan $0; Pro and Ultra via Google AI plans; Organization plan through Google Cloud.
Antigravity plans · Sep 23, 2026 — Quota tiers, AI credits for Pro/Ultra, Gemini models, third-party models on Ultra.
Getting started · Sep 23, 2026 — Desktop editor and CLI.
Use parallel agents to refactor projects, build tools, or run scheduled background tasks.
Choose it when a multi-step development job needs orchestration and later review.
Its Manager Surface separates agent supervision from the AI editor.
Owner-requested editorial use of public official interface screenshots, 15 September 2026. Copyright retained by the original publisher; attribution preserved. No open licence or hands-on course execution is asserted. Source asset: https://antigravity.google/assets/image/product/new-chat.png. PNG conversion preserves the complete frame. Converted on 15 October 2026 to a WebP (quality 80) for faster page loads; the original image remains in the media library.
