---
title: "List checkpoints for a fine-tuning job."
method: GET
path: "/fine_tuning/jobs/{fine_tuning_job_id}/checkpoints"
tags: ["Fine-tuning"]
---

# List checkpoints for a fine-tuning job.

`GET /fine_tuning/jobs/{fine_tuning_job_id}/checkpoints`

## Path parameters

- `fine_tuning_job_id` string, required

## Query parameters

- `after` string
- `limit` integer

## Response `200`

OK

- ListFineTuningJobCheckpointsResponse
  - `data` FineTuningJobCheckpoint[], required
    - `id` string, required — The checkpoint identifier, which can be referenced in the API endpoints.
    - `created_at` integer, required — The Unix timestamp (in seconds) for when the checkpoint was created.
    - `fine_tuned_model_checkpoint` string, required — The name of the fine-tuned checkpoint model that is created.
    - `step_number` integer, required — The step number that the checkpoint was created at.
    - `metrics` object, required — Metrics at the step number during the fine-tuning job.
      - `step` number
      - `train_loss` number
      - `train_mean_token_accuracy` number
      - `valid_loss` number
      - `valid_mean_token_accuracy` number
      - `full_valid_loss` number
      - `full_valid_mean_token_accuracy` number
    - `fine_tuning_job_id` string, required — The name of the fine-tuning job that this checkpoint was created from.
    - `object` 'fine_tuning.job.checkpoint', required — The object type, which is always "fine_tuning.job.checkpoint".
  - `object` 'list', required
  - `first_id` string, nullable
  - `last_id` string, nullable
  - `has_more` boolean, required

---

[API](https://skmtc.net/openai/apis/openai-api-3.md) · [All operations](https://skmtc.net/openai/apis/openai-api-3/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/openai/openai-api-3/versions/74cbcf73838f/schema)