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GET
/
fine_tuning
/
jobs
/
{fine_tuning_job_id}
/
checkpoints
curl https://api.portkey.ai/v1/fine_tuning/jobs/ftjob-abc123/checkpoints \
  -H "x-portkey-api-key: $PORTKEY_API_KEY" \
  -H "x-portkey-virtual-key: $PORTKEY_PROVIDER_VIRTUAL_KEY"
{
  "data": [
    {
      "id": "<string>",
      "created_at": 123,
      "fine_tuned_model_checkpoint": "<string>",
      "step_number": 123,
      "metrics": {
        "step": 123,
        "train_loss": 123,
        "train_mean_token_accuracy": 123,
        "valid_loss": 123,
        "valid_mean_token_accuracy": 123,
        "full_valid_loss": 123,
        "full_valid_mean_token_accuracy": 123
      },
      "fine_tuning_job_id": "<string>"
    }
  ],
  "has_more": true,
  "first_id": "<string>",
  "last_id": "<string>"
}

Documentation Index

Fetch the complete documentation index at: https://portkey-docs-vertex-context-caching-1771339020.mintlify.app/llms.txt

Use this file to discover all available pages before exploring further.

Authorizations

​
x-portkey-api-key
string
header
required
​
x-portkey-virtual-key
string
header
required

Path Parameters

​
fine_tuning_job_id
string
required

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

Example:

"ft-AF1WoRqd3aJAHsqc9NY7iL8F"

Query Parameters

​
after
string

Identifier for the last checkpoint ID from the previous pagination request.

​
limit
integer
default:10

Number of checkpoints to retrieve.

Response

200 - application/json

OK

​
data
FineTuningJobCheckpoint · object[]
required
​
object
enum<string>
required
Available options:
list
​
has_more
boolean
required
​
first_id
string | null
​
last_id
string | null
Last modified on February 17, 2026