curl -X POST 'https://api.openai.com/v1/fine_tuning/jobs/ft-AF1WoRqd3aJAHsqc9NY7iL8F/pause' \
  -H "Authorization: Bearer $OPENAI_API_KEY"

# POST /fine_tuning/jobs/{fine_tuning_job_id}/pause (OpenAI API)
Base URL: https://api.openai.com/v1
Auth: Authorization; OpenAI API key; required.
Last verified: 2026-10-20

> Pause fine-tuning

## Critical Gotchas
* The Responses API is the primary interface for new text and tool workflows; Chat Completions remains a separate compatibility API.
* Audio transcription uploads use multipart form data rather than a JSON request body.

## cURL
curl -X POST 'https://api.openai.com/v1/fine_tuning/jobs/ft-AF1WoRqd3aJAHsqc9NY7iL8F/pause' \
  -H "Authorization: Bearer $OPENAI_API_KEY"

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| fine_tuning_job_id | path | string | Yes | The ID of the fine-tuning job to pause.  |

## Response example
{"id":"string","created_at":0}

---
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POST

POST /fine_tuning/jobs/{fine_tuning_job_id}/pause — OpenAI API

OpenAI API key (required); https://api.openai.com/v1

OpenAI API

Pause fine-tuning

Base URL: https://api.openai.com/v1
Auth: Authorization: Bearer <OPENAI_API_KEY>
Last verified: 2026-10-20 · upstream hash matched

Actions Try in browser→

Agents: curl -H "Accept: text/markdown" this URL
→ 162 tokens · Vary: Accept

Critical gotchas

The Responses API is the primary interface for new text and tool workflows; Chat Completions remains a separate compatibility API.

Audio transcription uploads use multipart form data rather than a JSON request body.

cURL

curl -X POST 'https://api.openai.com/v1/fine_tuning/jobs/ft-AF1WoRqd3aJAHsqc9NY7iL8F/pause' \  -H "Authorization: Bearer $OPENAI_API_KEY"

Parameters

Name	In	Type	Required	Description
fine_tuning_job_id	path	string	Yes	The ID of the fine-tuning job to pause.

Response 200 OK

{
  "id": "string",
  "created_at": 0,
  "error": {
    "code": "string",
    "message": "string",
    "param": "string"
  },
  "fine_tuned_model": "string",
  "finished_at": 0,
  "hyperparameters": {
    "batch_size": "auto",
    "learning_rate_multiplier": "auto",
    "n_epochs": "auto"
  },
  "model": "string",
  "object": "fine_tuning.job",
  "organization_id": "string",
  "result_files": [
    "file-abc123"
  ],
  "status": "validating_files",
  "trained_tokens": 0,
  "training_file": "string",
  "validation_file": "string",
  "integrations": [
    {
      "type": "wandb",
      "wandb": {
        "project": "my-wandb-project",
        "name": "string",
        "entity": "string",
        "tags": [
          "custom-tag"
        ]
      }
    }
  ],
  "seed": 0,
  "estimated_finish": 0,
  "method": {
    "type": "supervised",
    "supervised": {
      "hyperparameters": {
        "batch_size": "auto",
        "learning_rate_multiplier": "auto",
        "n_epochs": "auto"
      }
    },
    "dpo": {
      "hyperparameters": {
        "beta": "auto",
        "batch_size": "auto",
        "learning_rate_multiplier": "auto",
        "n_epochs": "auto"
      }
    },
    "reinforcement": {
      "grader": {
        "type": "string_check",
        "name": "string",
        "input": "string",
        "reference": "string",
        "operation": "eq"
      },
      "hyperparameters": {
        "batch_size": "auto",
        "learning_rate_multiplier": "auto",
        "n_epochs": "auto",
        "reasoning_effort": "default",
        "compute_multiplier": "auto",
        "eval_interval": "auto",
        "eval_samples": "auto"
      }
    }
  },
  "metadata": {}
}

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