Same request. Three ways to draw it.

Each pane got the same request from the same model at the same moment. Watch how SayShape, HTML and A2UI turn the model's stream into an interface you can use, at the speed it arrived.

Recordings

Request

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SayShape

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Open source · works inside MCP Apps

Lines of text. Each line is drawn the moment it arrives.

HTML

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The approach behind MCP Apps in Claude and ChatGPT

Code in a sandboxed iframe, refreshed as markup arrives. Scripts run when they arrive.

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A2UI

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Google's standard, used in Gemini Enterprise and Opal

JSON messages drawn by A2UI's own renderer, each once it is complete.

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