For the last decade, frontend engineering has been about state management. We built massive, complex trees of components to handle every possible user interaction. "If user clicks X, show Modal Y."
In 2026, this deterministic model is becoming obsolete. Enter Generative UI (GenUI): interfaces that don't exist until the user needs them.
The "Just-in-Time" Interface
Imagine a banking app. Traditionally, it has a dashboard, a transactions page, a settings page, and 50 other static routes.
With GenUI, when a CFO asks "Show me all transactions over $10k from last month that look suspicious," the app doesn't redirect them to a filter view.
"Streaming component <SuspiciousTransactionsTable /> with props..."
The LLM (Gemini 3.0) decides at runtime which React Component is best suited to visualize the answer. It streams the component definition and the data simultaneously. The UI is ephemeral; it exists for that conversation and then dissolves.
The Tech Stack: RSC + AI SDK
This isn't sci-fi. It is the architecture we are deploying today at elitics.io using Vercel's AI SDK and React Server Components.
The Contract
We define a library of "dumb" components (Charts, Maps, Tables, Cards) that the AI can call as tools.
The Stream
The LLM outputs a stream that contains both text tokens and component payloads. The frontend renders them instantly using `Suspense`.
Why This Changes Everything
Zero Friction
Users don't have to learn your navigation menu. They just state their intent.
Personalization at Scale
Two users asking the same question might get different UIs based on their permissions and preferences.
The Future is Fluid. Static dashboards are the legacy of a pre-AI world. Are you ready to build software that adapts?
Enjoyed this perspective? Share it with your team.