Google’s Stitch, the AI-powered design tool that launched at Google I/O 2025 as a rebrand of the acquired Galileo AI, appears to be undergoing a complete transformation. TestingCatalog has uncovered traces of a sweeping redesign that brings together multiple previously spotted features, including studio mode, voice controls, and the Hatter agent, into what appears to be the tool’s final form.
The most striking change is the environment itself. Stitch is moving away from a flat canvas toward a 3D workspace that gives users the feeling of operating inside a spatial design environment. An AI agent appears as a compact, expandable widget that visually shifts position as users switch between design and prototype modes, reinforcing the sense of working alongside an intelligent collaborator. An agent log button provides access to past responses, keeping the history accessible without cluttering the workspace.
Voice mode is where things get particularly interesting. Users will be able to choose from multiple voice options for their agent, and when the agent responds, a glowing halo appears around the prompt bar, accompanied by spoken audio. The agent can modify designs, explain choices, offer suggestions, and brainstorm, turning what a text-prompt tool is into something closer to a conversational design partner.
The prototyping area also sees major additions. Users can view and navigate screen-to-screen connections, generate QR codes for easy sharing during user research, and trigger an “imagine more screens” feature where Stitch suggests missing components based on context.
Perhaps the biggest leap for Stitch is the ability to generate a fully functional React application from selected screens, not just a clickable prototype, but actual working code exportable to AI Studio or other tools.
This positions Stitch as a true end-to-end pipeline from concept to production, a direction Google has been building toward with recent additions like Agent Skills and MCP export. With Google I/O 2026 set for May 19–20, this complete overhaul could be what Google chooses to showcase on stage.
