@dymaxion this is all that's said in the post:
My work with Levent has been a purely personal collaboration, free of any
institutional agreements or official involvement by either of our employers. We
used several LLMs throughout: Anthropic’s Claude, OpenAI’s Codex, especially
with GPT-5.6 Sol and, more recently, Astra. The latter was only used for
writeups and auditing our arguments. [...]I pay for the tools my group uses out of my own research funds, including footing a large bill to OpenAI. I have had an industry collaboration before, with DeepMind, which had a formal institutional arrangement.
that could be a few things, depending on the institution, like that could be expensed as a private purchase or through the university's shared license and beyond. good question, i bet it'll get clarified soon
@jonny
It would be very interesting to know what account tier they were using. Assuming it was one of the educational or business accounts, they very much do not have the right to use customer data. Presuming they were following the law, of course; I'm not sure that's particularly relevant here.