Generating running routes with GPT-6 Astra and ChatGPT Work
Simon Willison used ChatGPT Work with GPT-6 Astra to generate 5K/10K running loops from OpenStreetMap data, noting the agent's executed code was not visible.
Simon Willison prompted ChatGPT Work running GPT-6 Astra (Max) to design looping 5K and 10K running routes from his address using OpenStreetMap data. The agent ran for 27 minutes and delivered an embedded visualization plus downloadable GPX and GeoJSON files, stating it used Nominatim for geocoding and Overpass to fetch local OSM roads and trails. He notes frustration that the actual executed code and exact actions were not visible in the ChatGPT UI, highlighting a transparency gap in agentic AI products.
- GPT-6 Astra (Max) in ChatGPT Work produced 5K/10K loop routes in 27 minutes
- Agent used Nominatim geocoding and Overpass to pull OpenStreetMap roads and trails
- Output included an interactive visualization plus GPX and GeoJSON downloads
- Executed code was hidden from the user, raising agent transparency concerns
From the original article
Here's a neat thing I had ChatGPT Work with GPT-6 Astra (Max) do this morning: I live at <my address>. Figure out 5K and 10K running routes from me that loop from my house. Use OSM data.
simonwillison.net
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