I used GPT-6 Astra to find the fastest-moving SF Muni buses and trains in real time I had the model repurpose the UI from my other mini apps and it seems to handle that quite well despite the scope The code generated by GPT-6 seems “qualitatively different”. It’s able to come up with more complex code across multiple files, in the first run Though I did run into more syntax errors (had to ground it with linters and type checkers) and at one point, it accidentally wiped my entire codebase