How-ToDevelopersSeptember 2, 2026

GeoJSON Map Viewer built with GPT-5.6-Sol and Claude Code

Simon Willison built a GeoJSON Map Viewer that displays GeoJSON files on a map and exports as PNG, using GPT-5.6-Sol for suggestions and Claude Code for web with Fable 5.1. He also used ChatGPT Work to generate boundary polygons from natural language requests.

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