I get Error 400 (Bad request) on creating fine-tuned model

API
1

Hi, I am trying to create a new fine-tuning model but when I send the request to create it, I get an error 400 (bad request) back… I don’t know what I am doing wrong.
I know authorization works, as I have tried some other endpoint and it worked…
This is the endpoint I am using: https://api.openai.com/v1/fine_tuning/jobs
Ok, so this is my json that I am sending:

{"training_file":"file-{some characters}","model":"gpt-3.5-turbo"}

I also tried with sending the file name instead of file id but that didn’t work either…
This is my code for reference:

var requestModel = new CreateFineTuneRequestModel
{
    TrainingFile = trainingFileId,
    Model = model
};

var requestJson = JsonConvert.SerializeObject(requestModel);

var endpoint = $"/v1/fine_tuning/jobs";

var response = await _httpClient.PostAsJsonAsync(endpoint, requestJson);
response.EnsureSuccessStatusCode();
2

Hi and welcome to the developer forum!

Have you been through the steps here to check everything is functioning?

3

Ok, so basically I just found out that if I have an older file, it works??? The way I make the training file is the same for all of them… Is there a timespan between when I can create a file and when I can use it? Because when I upload the file it is always successful…

4

If you are not able to use a new file, it usually indicates there is a problem with the json structure of that new file, have a look through it and see if you can spot any issues.

5

Problem is I don’t have access to the file on the dashboard on OpenAI…
Is there any other way I could look through and spot any mistakes?

6

You upload the file to OpenAI, so it’s whatever you uploaded.

7

I looked through the JsonL, but they both have the same structure and everything, so I don’t think the content could be the problem.

8

I found out the issue… You have to have 10 elements in the file to work… I always had 9 in testing…

1 Like
9

i have the same issue.
BadRequestError: 400 invalid training_file: file-abc123, string should match pattern ‘^file-[a-zA-Z0-9]{24}$’

I used the same name as the tutorial file-abc123.jsonl.
What’s wrong there? should I remove the .jsonl name?
that is not well explained I guess

10

Welcome to the Forum!

I assume you experience the issue when you attempt to create the fine-tuning job?

Note that you first have to upload the training file, which will return a file ID.
You then have to reference this particular file ID when creating the fine-tuning job.

1 Like
11

You where right, the file wasn’t uploaded yet to the system.

1 Like
12

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