Man, its knowledge is insane. I run a dying forum. I first prompted with "Who is at ?" and it gave me a very endearing, weirdly knowledgeable bio of myself and my contributions to the forum including various innovations I made in the space back in the day. It summarized my role on my own forum better than I could have ever written it. And then I asked "who are other notable users at " and it gave me a list of some mo…
Weird, it doesn't seem to have any info on reddit users or their writings. I tried asking about a bunch, also just about general "legendary users" from various subreddits and it seemingly just hallucinated.
This is assuming that lmsys' GPT-2 is retained GPT-4t or a new GPT-4.5/5 though; I doubt that (one obvious issue: why name it GPT-2 and not something like 'openhermes-llama-3-70b-oai-tokenizer-test' (for maximum discreetness) or even 'test language model (please ignore)' (which would work well for marketing); GPT-2 (as a name) doesn't really work well for marketing or privacy (at least compared to the other options)).
Lmsys has tested models with weird names for testing before: https://news.ycombinator.com/item?id=40205935