Hah, that was fast! Thank you. They must have had preview access. It didn't bode well that SimonW [0] had to explicitly tell GPT-5 to use python to get a table sorted correctly (but awesome that in can use python as a tool without any plumbing). It appears we are not quite to AGI yet.
[0] https://simonwillison.net/2025/Aug/7/gpt-5/