Google Cloud Next 2026: Flutter and Dart Unveil Full-Stack Firebase Functions, GenUI Coffee Shop, and Enterprise Wins

Breaking: Dart Now Powers Firebase Functions in Preview

Google announced a preview of Dart support for Firebase Functions at Cloud Next 2026, enabling developers to write both frontend and backend in Dart, a major step toward full-stack Dart development. The new integration also includes deeper ties with the Dart Admin SDK, reducing context switching and accelerating development velocity. Learn more about full-stack Dart below.

Google Cloud Next 2026: Flutter and Dart Unveil Full-Stack Firebase Functions, GenUI Coffee Shop, and Enterprise Wins

“This is a game-changer for Flutter developers,” said Emma Twersky, Developer Advocate at Google, during the Developer Keynote. “Now you can use the same language across the entire stack and streamline your workflow.”

Full-Stack Dart: Firebase Functions and Admin SDK

The preview of Dart support for Firebase Functions lets developers deploy serverless backend code written entirely in Dart. Combined with the Dart Admin SDK, teams can manage Firebase services like Firestore, Authentication, and Storage without switching languages.

Google plans to showcase this feature in a dedicated breakout session at Google I/O. The announcement was made alongside a technical deep dive led by Rody Davis and Kevin Moore, who explained how developers can start building full-stack Dart applications today.

GenLatte: An AI-Powered Coffee Shop Built With Flutter GenUI

At the center of the expo floor, Google built GenLatte—an AI-powered specialty coffee shop created entirely with Flutter’s GenUI framework. Attendees ordered drinks using a Flutter app that generated custom foam art via nanobanana technology.

“The GenLatte experience showed how generative UI can create delightful, real-world interactions,” said Kate Lovett, who helped Dash—the Flutter mascot—get her custom latte. Hundreds of visitors queued to see baristas print AI-generated images on their foam.

Agentic Mobile & Web Demos Draw Crowds

The expo also featured three hands-on demonstrations highlighting agentic capabilities: full-stack Dart, GenUI, and a special showcase by Very Good Ventures. The Partiful app, which generates its UI on the fly, was a standout example of how agents can dynamically build interfaces.

Fullstack Dart Demo: Live coding of Firebase Functions for Dart.
GenUI Demo: Attendees interacted with apps that created their own layouts.
VGV Showcase: Partner demo of agent-driven mobile and web apps.

Builder Hub: Developer Community Home Base

The Builder Hub served as the community anchor on the expo floor, with dedicated booths for Flutter, Firebase, and Go. Developers connected with experts, explored new tools, and participated in hands-on labs. “The energy was incredible—people were building and learning together,” one attendee noted.

Toyota and Talabat: Enterprise Success Stories

Real-world enterprise adoption took center stage. Abdallah Shaban joined industry leaders to showcase how Flutter transforms core products. Toyota revealed its next-generation infotainment system built with Flutter, while Talabat demonstrated faster innovation and scaling across the Middle East using the framework.

“Flutter allows us to deliver a consistent, high-quality UX across millions of vehicles,” said a Toyota spokesperson. Talabat echoed the sentiment, citing rapid iteration and cross-platform efficiency.

Developer Keynote: Flutter as Part of Google’s Agent Bet

Emma Twersky and Richard Seroter headlined the Developer Keynote, emphasizing that Flutter is integral to Google Cloud’s vision for agent-driven applications. The session included live demos of generative UI and full-stack Dart, reinforcing the message that Flutter is a key platform for the future of agents.

A deep dive on Generative UI by Yegor Jbanov and Andrew Brogdon showed how to move beyond chatbots—giving agents the ability to create their own user interfaces. The session will be available on the Flutter YouTube channel after Google I/O.

Background

Flutter is Google’s open-source UI toolkit for building natively compiled applications for mobile, web, and desktop from a single codebase. Dart is the programming language used by Flutter. At Google Cloud Next, the team has traditionally showcased integrations with Firebase, which is Google’s backend-as-a-service platform. The new Dart support for Firebase Functions extends that synergy, allowing developers to use Dart end-to-end without learning a separate backend language.

GenUI, short for Generative UI, is a Flutter feature that leverages language models to dynamically generate user interfaces at runtime, enabling agents to build custom screens on the fly. This technology powered the GenLatte experience and the Partiful demo.

What This Means

The announcement signals a strategic push by Google to make Dart a first-class language for cloud development. By enabling full-stack Dart, Google reduces the cognitive load for Flutter developers who previously had to master JavaScript or TypeScript for Firebase Functions. This could accelerate adoption among startups and enterprises seeking to streamline their tech stack.

For the broader developer ecosystem, the combination of Dart with Firebase Functions and the Dart Admin SDK offers a cohesive platform for building agentic and AI-powered applications. The enterprise case studies from Toyota and Talabat demonstrate that Flutter is mature enough for mission-critical, high-scale deployments.

As Google doubles down on Flutter and Dart at Cloud Next, the message is clear: the future of app development is increasingly language-consistent, agent-driven, and fully integrated with cloud services. Developers should start experimenting with the preview today to prepare for the mainstream availability expected later this year.