FineTuningJobCheckpoint(FineTuningJobCheckpoint)

{
    "id": "string",
    "created_at": 0,
    "fine_tuned_model_checkpoint": "string",
    "step_number": 0,
    "metrics": {
        "step": 0,
        "train_loss": 0,
        "train_mean_token_accuracy": 0,
        "valid_loss": 0,
        "valid_mean_token_accuracy": 0,
        "full_valid_loss": 0,
        "full_valid_mean_token_accuracy": 0
    },
    "fine_tuning_job_id": "string",
    "object": "fine_tuning.job.checkpoint"
}