List fine-tuning checkpoints

GEThttps:/api.openai.com/v1/fine_tuning/jobs/{fine_tuning_job_id}/checkpoints

List checkpoints for a fine-tuning job.

Path parameters

fine_tuning_job_id
string
Required
The ID of the fine-tuning job to get checkpoints for.

Query parameters

after
string
Identifier for the last checkpoint ID from the previous pagination request.
limit
integer
Defaults: 10
Number of checkpoints to retrieve.

Response

A list of fine-tuning checkpoint objects for a fine-tuning job.

Example request

1curl https://api.openai.com/v1/fine_tuning/jobs/ftjob-abc123/checkpoints \
2  -H "Authorization: Bearer $OPENAI_API_KEY"

Example response

1{
2  "object": "list"
3  "data": [
4    {
5      "object": "fine_tuning.job.checkpoint",
6      "id": "ftckpt_zc4Q7MP6XxulcVzj4MZdwsAB",
7      "created_at": 1721764867,
8      "fine_tuned_model_checkpoint": "ft:gpt-4o-mini-2024-07-18:my-org:custom-suffix:96olL566:ckpt-step-2000",
9      "metrics": {
10        "full_valid_loss": 0.134,
11        "full_valid_mean_token_accuracy": 0.874
12      },
13      "fine_tuning_job_id": "ftjob-abc123",
14      "step_number": 2000,
15    },
16    {
17      "object": "fine_tuning.job.checkpoint",
18      "id": "ftckpt_enQCFmOTGj3syEpYVhBRLTSy",
19      "created_at": 1721764800,
20      "fine_tuned_model_checkpoint": "ft:gpt-4o-mini-2024-07-18:my-org:custom-suffix:7q8mpxmy:ckpt-step-1000",
21      "metrics": {
22        "full_valid_loss": 0.167,
23        "full_valid_mean_token_accuracy": 0.781
24      },
25      "fine_tuning_job_id": "ftjob-abc123",
26      "step_number": 1000,
27    },
28  ],
29  "first_id": "ftckpt_zc4Q7MP6XxulcVzj4MZdwsAB",
30  "last_id": "ftckpt_enQCFmOTGj3syEpYVhBRLTSy",
31  "has_more": true
32}

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