there's a bunch of questions i was asking (eg media analysis questions, "speculate on the meaning of this movie") where gpt-5.5 and opus 4.8 say things that sound reasonable but if you pay closer attention or double-check against other sources you'll see where they cut a lot of corners and are somewhat bullshitting based on superficial details. fable did a lot less of this and a lot more stuff that seemed like it actually held up and was getting to the heart of things. it seemed meaningfully better at relevance realization. of course i didn't have enough time to really thoroughly test this