List training checkpoints

GET

https://api.fastino.ai

training-jobs

{job_id}

checkpoints

curl https://api.fastino.ai/v1/training-jobs/YOUR_TRAINING_JOB_ID/checkpoints \
  -H "X-API-Key: $FASTINO_API_KEY"

{
  "success": true,
  "checkpoints": [
    {
      "id": "CHECKPOINT_ID",
      "job_id": "YOUR_TRAINING_JOB_ID",
      "epoch": 5,
      "step": 500,
      "training_loss": 0.12,
      "validation_loss": 0.18,
      "is_deployable": true,
      "is_best": true,
      "is_final": true,
      "created_at": "2026-09-22T20:30:00Z",
      "updated_at": "2026-09-22T20:30:00Z"
    }
  ],
  "count": 1
}

GET /v1/training-jobs/{job_id}/checkpoints Returns checkpoints visible for a training job.

Request

string

required

Your Fastino API key.

string

required

Training-job UUID.

curl https://api.fastino.ai/v1/training-jobs/YOUR_TRAINING_JOB_ID/checkpoints \
  -H "X-API-Key: $FASTINO_API_KEY"

Response

boolean

Whether the request succeeded.

object[]

Saved checkpoints. Each can include id, job_id, epoch, step, loss values, accuracy, learning_rate, GPU-memory values, checkpoint_path, is_deployable, is_best, is_final, and timestamps.

integer

Number of checkpoints returned.

{
  "success": true,
  "checkpoints": [
    {
      "id": "CHECKPOINT_ID",
      "job_id": "YOUR_TRAINING_JOB_ID",
      "epoch": 5,
      "step": 500,
      "training_loss": 0.12,
      "validation_loss": 0.18,
      "is_deployable": true,
      "is_best": true,
      "is_final": true,
      "created_at": "2026-09-22T20:30:00Z",
      "updated_at": "2026-09-22T20:30:00Z"
    }
  ],
  "count": 1
}

An unknown or inaccessible job returns 404.

⌘I

curl https://api.fastino.ai/v1/training-jobs/YOUR_TRAINING_JOB_ID/checkpoints \
  -H "X-API-Key: $FASTINO_API_KEY"

{
  "success": true,
  "checkpoints": [
    {
      "id": "CHECKPOINT_ID",
      "job_id": "YOUR_TRAINING_JOB_ID",
      "epoch": 5,
      "step": 500,
      "training_loss": 0.12,
      "validation_loss": 0.18,
      "is_deployable": true,
      "is_best": true,
      "is_final": true,
      "created_at": "2026-09-22T20:30:00Z",
      "updated_at": "2026-09-22T20:30:00Z"
    }
  ],
  "count": 1
}

Get Started

Core Concepts

Inference API

Training API

Account

List training checkpoints

Request

Response

​Request

​Response

Request

Response