[Enhancement]: Enhance Transactions values

[RAPHCVR]

What features would you like to see added?

I am working in intern for a panel for metrics on usage, using tables on mongodb.

There are few issues: Indeed, chatgpt-4o-latest is using the same parameters as gpt-4o, but it's not the same cost (it's indeed 5/15), moreover, cached_token are not taken into account for now in the transaction database, but they have different rates, for o1 pricing it's huge difference for example.

There is a nice cookbook on how to get cached tokens here:

https://cookbook.openai.com/examples/prompt_caching101

More details

If you need anything else from me do not hesitate to ask

Which components are impacted by your request?

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