Being billed for InstructGPT while only using gpt-3.5-turbo

I only use gpt-3.5-turbo via API and noticed a $0.01 daily charge for InstructGPT.
I have a few python codes with API calls to openai and nothing else. I have chatGPT, but I’m considering both are different products with different billings.
It is a very small amount, but I must prepare a detailed report.

Has anyone been charged for InstructGPT without using it? Or there’s something I’m missing?


Are you using the API via vanilla code? Or using third-party library/module? If so, it might be the case that InstructGPT is being used internally, for better response, I suppose. Is there a pattern in the usage?


The only “unusual” thing, I doing is using async calls to the API. I’m using the openai python library.

“InstructGPT” is any completion model that has fine-tune training, such as gpt-3.5-turbo-instruct, text-davinci-003, text-babbage-001…