---
title: "Get fine-tuning checkpoint"
method: GET
path: "/v1/fine_tuning/jobs/{job_id}/checkpoints/{checkpoint_id}"
tags: ["fine-tuning"]
---

# Get fine-tuning checkpoint

`GET /v1/fine_tuning/jobs/{job_id}/checkpoints/{checkpoint_id}`

## Request

- Base URL: `https://api.tokenfactory.nebius.com`
- URL: `https://api.tokenfactory.nebius.com/v1/fine_tuning/jobs/{job_id}/checkpoints/{checkpoint_id}`
- Auth: HTTP bearer
- TypeScript: <https://skmtc.dev/nebius/apis/nebius-openai-compatible-inference-api/docs/v1/fine_tuning/jobs/:job_id/checkpoints/:checkpoint_id/get.ts> (a function with typed inputs; its response is checked against the schema)

Get details about a specific checkpoint from a fine-tuning job.

## Path parameters

- `job_id` string, required
- `checkpoint_id` string, required

## Response `200`

Successful Response

- OpenaiTypesFineTuningJobsFineTuningJobCheckpointFineTuningJobCheckpoint: The `fine_tuning.job.checkpoint` object represents a model checkpoint for a fine-tuning job that is ready to use.
  - `id` string, required
  - `created_at` integer, required
  - `fine_tuned_model_checkpoint` string, required
  - `fine_tuning_job_id` string, required
  - `metrics` Metrics, required: Metrics at the step number during the fine-tuning job.
    - `full_valid_loss` number, nullable
    - `full_valid_mean_token_accuracy` number, nullable
    - `step` number, nullable
    - `train_loss` number, nullable
    - `train_mean_token_accuracy` number, nullable
    - `valid_loss` number, nullable
    - `valid_mean_token_accuracy` number, nullable
  - `object` 'fine_tuning.job.checkpoint', required
  - `step_number` integer, required

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/nebius/apis/nebius-openai-compatible-inference-api.md) - [All operations](https://skmtc.dev/nebius/apis/nebius-openai-compatible-inference-api/llms.txt) - [OpenAPI document](https://skmtc.dev/nebius/apis/nebius-openai-compatible-inference-api/revisions/0fb323abba3c?raw)