Open AI (ChatGPT)
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  1. Fine-tuning
Open AI (ChatGPT)
🇺🇸 English
  • 🇺🇸 English
  • 🇯🇵 Japanese
  • 🇵🇹 Portuguese
  • 🇰🇷 Korea
  • 🇩🇪 German
  • README
  • Introduction
  • Authentication
  • Making requests
  • Streaming
  • Debugging requests
  • Backward compatibility
  • Administration
  • Audio
    • Create speech
      POST
    • Create transcription
      POST
    • Create translation
      POST
  • Chat
    • Create chat completion
      POST
  • Embeddings
    • Create embeddings
      POST
  • Fine-tuning
    • Create fine-tuning job
      POST
    • List fine-tuning jobs
      GET
    • List fine-tuning events
      GET
    • List fine-tuning checkpoints
      GET
    • Retrieve fine-tuning job
      GET
    • Cancel fine-tuning
      POST
  • Batch
    • Create batch
      POST
    • Retrieve batch
      GET
    • Cancel batch
      POST
    • List batch
      GET
  • Files
    • README
    • Upload file
      POST
    • List files
      GET
    • Retrieve file
      GET
    • Delete file
      DELETE
    • Retrieve file content
      GET
  • Uploads
    • Create upload
    • Add upload part
    • Complete upload
  • Images
    • README
    • Create image
    • Create image edit
    • Create image variation
  • Models
    • List models
    • Retrieve model
    • Delete a fine-tuned model
  • Moderations
    • Create moderation
  • Invites
    • List invites
    • Create invite
    • Retrieve invite
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  • Users
    • List users
    • Modify user
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    • Create project user
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    • Create project service account
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    • List project service accounts
    • Create project service account
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  • Project API keys
    • List project API keys
    • Retrieve project API key
    • Delete project API key
  • Project rate limits
    • List project rate limits
    • Modify project rate limit
  • Audit logs
    • List audit logs
  • Usage
    • Completions
    • Embeddings
    • Moderations
    • Images
    • Audio speeches
    • Audio transcriptions
    • Vector stores
    • Code interpreter sessions
    • Costs
  • Completions
    • Create completion
  • Assistants (v1)
    • Create assistant (v1)
    • Create assistant file (v1)
    • List assistants (v1)
    • List assistant files (v1)
    • Retrieve assistant (v1)
    • Retrieve assistant file (v1)
    • Modify assistant (v1)
    • Delete assistant (v1)
    • Delete assistant file (v1)
  • Threads (v1)
    • Create thread (v1)
    • Retrieve thread (v1)
    • Modify thread (v1)
    • Delete thread (v1)
  • Messages (v1)
    • Create message (v1)
    • List messages (v1)
    • List message files (v1)
    • Retrieve message (v1)
    • Retrieve message file (v1)
    • Modify message (v1)
  • Runs (v1)
    • Create run (v1)
    • Create thread and run (v1)
    • List runs (v1)
    • List run steps (v1)
    • Retrieve run (v1)
    • Retrieve run step (v1)
    • Modify run (v1)
    • Submit tool outputs to run (v1)
    • Cancel a run (v1)
  1. Fine-tuning

Create fine-tuning job

POST
https://api.openai.com/v1/fine_tuning/jobs
Creates a fine-tuning job which begins the process of creating a new model from a given dataset.
Response includes details of the enqueued job including job status and the name of the fine-tuned models once complete.
Learn more about fine-tuning
Request Request Example
Shell
JavaScript
Java
Swift
curl --location --request POST 'https://api.openai.com/v1/fine_tuning/jobs' \
--header 'Authorization: Bearer $OPENAI_API_KEY' \
--header 'Content-Type: application/json' \
--data-raw '{
    "training_file": "file-BK7bzQj3FfZFXr7DbL6xJwfo",
    "model": "gpt-4o-mini"
  }'
Response Response Example
{
  "object": "fine_tuning.job",
  "id": "ftjob-abc123",
  "model": "gpt-4o-mini-2024-07-18",
  "created_at": 1721764800,
  "fine_tuned_model": null,
  "organization_id": "org-123",
  "result_files": [],
  "status": "queued",
  "validation_file": null,
  "training_file": "file-abc123",
}

Request

Authorization
Provide your bearer token in the
Authorization
header when making requests to protected resources.
Example:
Authorization: Bearer ********************
Header Params
Content-Type
string 
required
Example:
application/json
Authorization
string 
required
Example:
Bearer $OPENAI_API_KEY
Body Params application/json
training_file
string 
required
The ID of an uploaded file that contains training data.
See upload file for how to upload a file.
Your dataset must be formatted as a JSONL file. Additionally, you must upload your file with the purpose fine-tune.
The contents of the file should differ depending on if the model uses the chat or completions format.
See the fine-tuning guide for more details.
model
string 
required
The name of the model to fine-tune. You can select one of the supported models.
Examples

Responses

🟢200Success
application/json
Body
object
string 
required
id
string 
required
model
string 
required
created_at
integer 
required
fine_tuned_model
null 
required
organization_id
string 
required
result_files
array[string]
required
status
string 
required
validation_file
null 
required
training_file
string 
required
Modified at 2025-01-23 10:32:41
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