AnalysisAI ModelsSeptember 12, 2026

GPT-6 Astra builds 5K and 10K running routes from OSM data

Simon Willison asked ChatGPT Work with GPT-6 Astra (Max) to generate looping 5K and 10K routes from his address using OSM data; it ran 27 minutes and returned a visualization plus GPX and GeoJSON files. It used Nominatim and Overpass, but the code it ran was not visible in the UI.

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