We spent 20B+ tokens of GPT-6 Astra to explore everything. Here’s our learnings.

Link to: https://simonwillison.net/2026/Sep/3/gpt6-astra/

Astra is designed to navigate software much as a person does — working across browsers, spreadsheets, websites and desktop applications, producing finished documents and…

An impressive system that can (to some unknown extent) build symbolic world models