Checkpoints
Save a training checkpoint
Save a training checkpoint containing LoRA weights and optimizer state. Poll the returned request identifier for the result.
Header parameters
Foundry-Features
enum
required
A feature flag opt-in required when using preview operations or modifying persisted preview resources.
Path parameters
sessionId
string
required
Identifier of the fine-tuning session to checkpoint.
Query parameters
api-version
string
required
The API version to use for this operation.
Request Body
Identifier and optional training metadata for the checkpoint.
path
string
required
User-supplied checkpoint identifier. Alphanumeric plus underscores and hyphens; max 255 characters.
step_number
integer
Training iteration this checkpoint corresponds to. Optional.
metrics
object
Per-step evaluation metrics at checkpoint time. Optional.
Responses
The request has succeeded.
Body
request_id
string
required
Request identifier to pass to the session's request-status endpoint.
status
enum
required
Indicates that the request has not yet completed.
Request
POST /fine_tuning/sessions/{sessionId}/checkpoint HTTP/1.1Response
Status: 200
Content-Type: application/jsonStatus: 4XX
Content-Type: application/jsonStatus: 5XX
Content-Type: application/json