I had thought I had seen both as well.

Skipped over the opening graphic on first read but just read it. Could they have picked a creepier sample sentence.

You sent me down a bit of a rabbit hole, but it turned up an interesting answer. Turns out they are nondeterministic, and why they aren’t deterministic is still an open question https://thinkingmachines.ai/blog/defeating-nondeterminism-in-llm-inference/

Oh lord, this one got me good ❤️