Stitch + Antigravity + Flutter: Build Apps with AI Agents in 2026

In 2026, the way we build Flutter apps has completely changed. You no longer start by opening VS Code and typing widgets line by line. Instead, you describe your app in plain English, an AI agent designs the entire UI, another agent writes and wires up the code, and you only guide the process. That’s exactly what Google’s Stitch + Antigravity + Flutter combo delivers. Today I’m going to show you the complete end-to-end workflow: from a simple prompt to a fully functional Flutter app in under a few minutes. This is the new skill every Flutter developer needs in 2026. Why This Workflow Matters Right Now Stitch is Google’s AI design agent. You give it a text prompt or even a rough sketch, and it instantly generates production-ready UI designs and structured metadata. Antigravity is Google’s agentic IDE — a next-gen VS Code fork powered by Gemini. It doesn’t just suggest code; it plans, runs terminal commands, installs packages, writes tests, and iterates until the app works. When you conn