> Then again, the way things are rapidly improving I suspect I can wait 6 months and they'll have a model that can do what I want.

I believe this. I've been having the forgetting problem happen less with Gemini 2.5 Pro. It does hallucinate, but I can get far just pasting all the docs and a few examples, and asking it to double check everything according to the docs instead of relying on its memory.