Simon Willison demonstrated that GPT-6 Astra (via ChatGPT Work) can automatically generate 5 km and 10 km running routes from a given address using OpenStreetMap data, outputting visualizations, GPX, and GeoJSON files. The demo highlighted a transparency issue: the underlying Python code and intermediate steps were not exposed after the conversation was compacted, prompting a call for better preservation of pre‑compacted text in LLM agents.
Background
With the release of GPT-6, developers are exploring agent‑based workflows that combine large language models with external tools such as OpenStreetMap APIs to perform complex tasks like route planning.
- Source
- Simon Willison
- Published
- Sep 13, 2026 at 07:56 AM
- Score
- 6.0 / 10