Anecdotally, Claude seems to hallucinate more during certain hours. It's amusing to watch, almost like your dog that gets too bored and stops responding to your commands - you say "sit" and he looks at you, tilts his head, looks straight up at you, almost like saying "I know what you're saying..." but then decides to run to another room and bring his toy.

And you'd be wondering: "darn, where's that toughest, most obidient and smart Belgian malinois that just a few hour ago was ready to take down a Bin Laden?"

Talking of anecdotal, 4o with canvas, which is normally excellent, tends to give up around a certain context length, and you have to copy and paste what you have into a new window to get it to make edits