Can Google AI Studio build and deploy a full app for free? Yes, up to two apps. Here are the limits

Can Google AI Studio build and deploy a full app for free? Yes, within limits. Building in AI Studio's Build mode is free, and Google says eligible accounts can "publish up to 2 full-stack applications without setting up a Google Cloud project or billing account." The limits: only some Gemini models are free, the free database quota is small and shared, a deployed app uses your API key for every visitor, and on the free tier Google may use your prompts to improve its products. Everything here is from Google's own pages, read on November 3, 2026.

What does Google AI Studio build for free?

A working app from a prompt, at no charge. Google's Build docs describe the feature as a way "to quickly build (or 'vibe code') and deploy apps," and say AI Studio "supports building web apps with full-stack runtimes and native Android apps with Kotlin and Jetpack Compose — all through natural language prompting."

For a web app, that means a React front end by default and, on the server, "a Node.js runtime that allows for secure API calls, database connections, and npm package usage." You can open the Code tab, keep chatting to change things, sync to GitHub or download a ZIP. The agent can also add a Firestore database, "Sign in with Google," and connections to Gmail, Sheets, Calendar and other Google Workspace apps.

Is the building part really free? Google's billing FAQ answers it directly: "AI Studio usage remains free of charge unless users link a paid API key for access to paid features." New accounts start on the Free Tier, which Google says "allows access to certain models in the Gemini API and AI Studio, up to the models' free tier rate limits."

Can you deploy an AI Studio app for free?

Yes, two of them, if Google says your account is eligible. Google's deploying docs list two ways to publish from Build mode:

• Starter Tier (free). You click Publish, then Get Started, then Publish App, and AI Studio gives you a Cloud Run URL. You can pick a custom address under ai.studio (for example your-app-name.ai.studio), first come, first served. Google's limits: "You can deploy up to two services," and they run in "a single Cloud Run region." If you already have two live, Google says you'll be asked to unpublish one or upgrade to a paid account.
• Standard deployment (billing on). A Google Cloud project with billing enabled. Cloud Run then has its own free allowance: for request-based billing in us-central1, Google's Cloud Run pricing lists the first 180,000 vCPU-seconds, 360,000 GiB-seconds and 2 million requests free per month, shared across projects on the same billing account.

The Starter Tier isn't a bare server. Google's Starter Tier page says that for AI Studio it provisions Cloud Run, Firebase Authentication, Firestore and Cloud SQL for PostgreSQL (developer edition), in a project Google manages for you. You can't turn on other Google Cloud APIs inside it.

Who can't use the free Starter Tier?

Google lists three reasons an account may be refused:

• "You're signed in with a Google Workspace account (including paid or free Google Workspace, Google Workspace for Education, or Google for Nonprofits subscriptions)."
• "You have an active or prior paid Google Cloud billing account."
• "We don't have enough evidence from your account activity to grant Starter Tier access at this time."

And Google adds: "The Google AI Studio support team can't override Starter Tier eligibility." So a work or school Google account, or a personal account that once paid for Google Cloud, goes straight to the billing route. Google's own codelab, which builds a small "Snake & Beats" game, still lists "A Cloud Project with billing enabled" under what you'll need; that's the standard route, not the only one.

Which Gemini models can a free AI Studio app use?

The Flash models and Gemini 2.5 Pro, but not Google's top model or its image models. Google's pricing page marks each model's Free Tier column. On November 3, 2026 it read:

That matters for vibe coders because Build mode's own docs pitch apps that "test out the latest capabilities of Gemini like Nano Banana." An app that generates images needs a paid project. A chatbot or text tool on a Flash model can stay free.

Free doesn't mean unlimited. Google's rate limits page says limits are set per project, "not per API key," daily quotas "reset at midnight Pacific time," and your exact numbers are shown in AI Studio rather than published: "Specified rate limits are not guaranteed and actual capacity may vary." Check yours on AI Studio's rate-limit page before you share the app with a crowd.

How much database does a free AI Studio app get?

A small shared quota. When the agent adds Firestore for you, Firebase's AI Studio integration page says all those databases sit in one "AI shared quota" group that needs no billing account, with these daily and monthly limits:

• 1 GiB of stored data in total
• 10 GiB of network egress a month
• 40,000 writes, 50,000 reads and 50,000 real-time updates a day

The catch is what happens at the limit: "the service will pause for all databases within the group and resume the following day at around midnight Pacific Time." One busy app can take down your other AI Studio apps' databases for the rest of the day. Firebase also notes the Starter Tier "is not available for Android apps."

To go past it you add billing and then upgrade each database by hand. Firebase is explicit: "Linking a Cloud Billing account doesn't automatically remove the shared quota caps. You must click the Upgrade database button in the Firebase console."

Who pays when strangers use your free app?

You do, through your API key and your quota. Google says your Gemini key "is stored as a server-side secret and is never included in client-side code," so visitors can't steal it. But: "When you deploy to Cloud Run from AI Studio, your API key is included securely in the server-side environment. The deployed app will use your API key for all users' Gemini API calls."

On the free tier that means every visitor eats into your free rate limits. Once you link billing, it means their usage is billed to you. Google says AI Studio "will give you a heads-up during setup and before you share if your app could incur costs." The habit this points to is the one in rate limits: decide how much one visitor can use before a stranger or a script decides for you.

If you do go paid, Google's billing page says new users default to Prepay with a $5 minimum, Tier 1 accounts have a $250 monthly spend cap, and you can set your own project spend cap. Google warns that cap is experimental and "You may experience overages beyond your project cap if billing data hasn't processed before more charges are accrued," with a delay of around 10 minutes.

Is the database safe by default?

Google says the rules start locked, and that checking them is your job. When we first wrote this page on October 3, 2026, the Google pages we'd read didn't say which rules the agent sets. Firebase's integration page now does: the agent "automatically generates Firebase Security Rules based on your app's logic," designed to be "default deny," meaning "end-users of your app can only access the data they own." The rules live in a firestore.rules file in your project.

In the same section Firebase says: "It's your responsibility to review and test the generated Security Rules before deploying them to production," and "Google and Firebase are not liable for any security vulnerabilities in AI-generated Security Rules." One more trap: if you edit the rules in the Firebase console, "the Google AI Studio agent won't know about the changes, and they will be overwritten during subsequent app iterations." Change them through the agent instead.

Why this matters: database rules are what stop one user reading another's data, the same job Row Level Security does in Supabase. Open firestore.rules, ask the agent to explain each rule in plain English, then sign in as two different test users and confirm neither can see the other's data. The full list is in the six checks.

Who can see your app's code?

Anyone you share it with. Google's FAQ: "By default your app is private." Then: "Users you share your app with can see its code and fork it for their own purposes. If you share your app with edit permission, the other users can edit the code of your app." So treat everything in the code as readable by whoever gets the link. Keys belong in the Secrets panel, not in files, the same rule as keeping secrets out of the browser.

Google also reviews apps automatically and says an app that breaks its policies "will be removed from AI Studio," and that "as the owner of your application, you are responsible for its behavior and all data it handles."

Where does Google Antigravity fit?

It's the engine under Build mode, sold as a separate developer tool. Google's Developers Blog introduced Antigravity on November 20, 2025 as "a development platform that combines a familiar, AI-powered coding experience with a new agent-first interface." The AI Studio docs say "The Antigravity Agent is the main AI functionality within Google Antigravity and now the core components of the agent harness is powering the Build mode experience in Google AI Studio." For how prompt-to-app builders compare with codebase tools, see Lovable vs Cursor vs Claude Code.

Before launch day, the full walk-through is in everything to check before real people use your app, and if you're weighing other builders, the same pre-share checks for Lovable are in the Lovable checklist.

This page has no affiliate links or sponsored placements. Every limit comes from Google's and Firebase's own documentation, read on November 3, 2026; Google changes these pages often, so check the linked docs before you rely on a number. We haven't built an app in AI Studio ourselves, so nothing here describes how it feels to use.