You should also try the same prompt multiple times to see how this works.

Sometimes you will get better or worse answers completely by chance.

I think Claude is pretty good if you have it write a function and give it the inputs, output and a data example. You can also put to ask clarifying questions as needed because there is a good chance there are aspects of the prompt that are ambiguous.

My prompts are always better if I write them in a separate text file and then paste them in too. I think I just take my time and think things out more that way instead of trying to get to the answer as fast.