>has issues (according to OpenAI)

What is this referring to?

I've been testing various big and small models for years and, about a year ago, switched my attitude from "biggest model is best!" to "best depends on task".

For example, I had a simple coding task which required making 3 trivial changes in 3 source files. Biggest Model completed task perfectly and took 90 seconds.

Smaller Brother also completed task perfectly, but took 30 seconds and cost 5x less.