Simon Willison 1/22/2026

Quoting Chris Lloyd

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The article shares a technical insight from Chris Lloyd of the Claude Code team at Anthropic, explaining that Claude Code's mental model is closer to a small game engine than a simple TUI. It outlines the rendering pipeline: constructing a React scene graph, laying out elements, rasterizing to a 2D screen, diffing against the previous screen, and generating ANSI sequences to draw, all within a tight ~16ms frame budget.

Quoting Chris Lloyd

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