Add columns with cost details to Results

[rbyh]

We should add add the following columns to results, especially as they are not presented identically in raw responses across models:

Prefix: "cost" (keep this single to clarify it is per response)
Sub-fields:

• "input_tokens": input tokens for the individual result
• "output_tokens": output tokens for the individual result
• "cache_used": true / false
• "credits": total credits consumed to generate the result (either when it was cached or in current results, so that non-owner can estimate costs)

[johnjosephhorton]

Thanks @rbyh - I like this - just trying to think about the right syntax. Right now, because the 'fields" have to be globally unique, I append a string to a question-specific field e.g., I do generated_tokens.how_feeling_generated_tokens
How would you like this organized? Maybe give some examples of the syntax you'd like to use?

[rbyh]

cost.how_feeling_input_tokens
cost.how_feeling_output_tokens
cost.how_feeling_cache_used
cost.how_feeling_credits

[rbyh]

Related open issue: #998