Earlier quoted context omitted.
All 3 models you ranked cannot get "how many r's are in strawberry?" correct. They all claim 2 r's unless you press them. With all the training data I'm surprised none of them fixed this yet.
When using a prompt that involves thinking first, all three get it correct. "Count how many rs are in the word strawberry. First, list each letter and indicate whether it's an r and tally as you go, and then give a count at the end." Llama 405b: correct Mistral Large 2: correct Claude 3.5 Sonnet: correct
We should always put some effort into prompt engineering before dismissing the potential of generative AI.