Am I billed for validation file tokens during supervised fine-tuning?

API
1

Hi all. I’m trying to estimate the cost of a fine-tuning job I’m hoping to run at some point in the future, and I was wondering if I will be billed for the tokens input/output by the model during the validation portion of supervised fine-tuning at the end of each epoch. I can’t find any mention of this in the documentation.

While my gut instinct would tell me that those tokens would be billable, when I have run fine-tuning jobs in the past the bill seemed to only include the tokens from the training file. Anything from somebody who is more familiar with the fine-tuning process than I am would be greatly appreciated!

2

Sorry to piggyback on this question, but when you were billed for fine-tune, how soon after the job was complete did the activity show up in your usage and billing? It’s been 2 days since my job was successfully completed and I haven’t been billed and it hasn’t shown up in my usage.

3

My understanding is that this is already included in the precalculated cost of training tokens for the given model, since validation loss is determined on each fine-tuning step.

In short: I wouldn’t expect to be billed. If you are billed, this isn’t documented anywhere.