Start a training run
Viewing v1— superseded by v2
POST
/v1/workspaces/{workspace_id}/training-runs
curl --request POST \ --url https://api.app.layer.ai/api/v1/workspaces/:workspace_id/training-runs \ --header 'Authorization: Bearer <token>' \ --header 'Content-Type: application/json' \ --data '{ "reference_set_id": "<uuid>", "base_model_id": "<string>", "training_framework": "fal"}'import requests
url = "https://api.app.layer.ai/api/v1/workspaces/:workspace_id/training-runs"
payload = { "reference_set_id": "<uuid>", "base_model_id": "<string>", "training_framework": "fal"}headers = { "Authorization": "Bearer <token>", "Content-Type": "application/json"}
response = requests.post(url, json=payload, headers=headers)
print(response.json())const url = 'https://api.app.layer.ai/api/v1/workspaces/:workspace_id/training-runs';const options = { method: 'POST', headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'}, body: '{"reference_set_id":"<uuid>","base_model_id":"<string>","training_framework":"fal"}'};
try { const response = await fetch(url, options); const data = await response.json(); console.log(data);} catch (error) { console.error(error);}package main
import ( "fmt" "strings" "net/http" "io")
func main() {
url := "https://api.app.layer.ai/api/v1/workspaces/:workspace_id/training-runs"
payload := strings.NewReader("{\n \"reference_set_id\": \"<uuid>\",\n \"base_model_id\": \"<string>\",\n \"training_framework\": \"fal\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>") req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close() body, _ := io.ReadAll(res.Body)
fmt.Println(res) fmt.Println(string(body))
}<?php
$curl = curl_init();
curl_setopt_array($curl, [ CURLOPT_URL => "https://api.app.layer.ai/api/v1/workspaces/:workspace_id/training-runs", CURLOPT_RETURNTRANSFER => true, CURLOPT_ENCODING => "", CURLOPT_MAXREDIRS => 10, CURLOPT_TIMEOUT => 30, CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1, CURLOPT_CUSTOMREQUEST => "POST", CURLOPT_POSTFIELDS => json_encode([ 'reference_set_id' => '<uuid>', 'base_model_id' => '<string>', 'training_framework' => 'fal' ]), CURLOPT_HTTPHEADER => [ "Authorization: Bearer <token>", "Content-Type: application/json" ],]);
$response = curl_exec($curl);$err = curl_error($curl);
curl_close($curl);
if ($err) { echo "cURL Error #:" . $err;} else { echo $response;}OkHttpClient client = new OkHttpClient();
MediaType mediaType = MediaType.parse("application/json");RequestBody body = RequestBody.create(mediaType, "{\n \"reference_set_id\": \"<uuid>\",\n \"base_model_id\": \"<string>\",\n \"training_framework\": \"fal\"\n}");Request request = new Request.Builder() .url("https://api.app.layer.ai/api/v1/workspaces/:workspace_id/training-runs") .post(body) .addHeader("Authorization", "Bearer <token>") .addHeader("Content-Type", "application/json") .build();
Response response = client.newCall(request).execute();require 'uri'require 'net/http'
url = URI("https://api.app.layer.ai/api/v1/workspaces/:workspace_id/training-runs")
http = Net::HTTP.new(url.host, url.port)http.use_ssl = true
request = Net::HTTP::Post.new(url)request["Authorization"] = 'Bearer <token>'request["Content-Type"] = 'application/json'request.body = "{\n \"reference_set_id\": \"<uuid>\",\n \"base_model_id\": \"<string>\",\n \"training_framework\": \"fal\"\n}"
response = http.request(request)puts response.read_bodyvar client = new RestClient("https://api.app.layer.ai/api/v1/workspaces/:workspace_id/training-runs");var request = new RestRequest("", Method.Post);request.AddHeader("Authorization", "Bearer <token>");request.AddHeader("Content-Type", "application/json");request.AddParameter("application/json", "{\n \"reference_set_id\": \"<uuid>\",\n \"base_model_id\": \"<string>\",\n \"training_framework\": \"fal\"\n}", ParameterType.RequestBody);var response = client.Execute(request);v1 is superseded. v1 was superseded by v2 on 2026-08-26. A sunset date has not been announced yet; v1 will be deprecated as a whole before removal. Migrate with the v2 migration guide.
Start training a custom style/LoRA from a reference set. Returns immediately with a run ID. Poll GET /workspaces/{workspace_id}/training-runs/{training_run_id} for progress. Creative Units are reserved at submission; call the estimate endpoint first to check cost.
Authorizations
Section titled “Authorizations”Parameters
Section titled “Parameters”Path Parameters
Section titled “Path Parameters”workspace_id
required
Workspace Id
Id of the workspace that owns the resource.
string format: uuid
Id of the workspace that owns the resource.
Request Bodyrequired
Section titled “Request Bodyrequired”Responses
Section titled “Responses”Successful Response
Media typeapplication/json
StartTrainingResponse
object
training_run_id
required
Training Run Id
Unique identifier for this training run.
string format: uuid
state
required
State
Coarse state; in_progress right after submission.
string
raw_status
required
Raw Status
Fine-grained run status (e.g. initializing).
string
created_at
required
Created At
Timestamp the run was created.
string format: date-time
poll_interval_seconds
required
Poll Interval Seconds
Suggested polling interval in seconds.
integer
Example
{ "state": "in_progress"}Unauthenticated — missing or invalid Bearer token.
Media typeapplication/problem+json
object
type
required
string
title
required
string
status
required
integer
detail
required
string
Example
{ "type": "https://api.layer.ai/errors/ERROR_CODE", "title": "Error Title", "status": 400, "detail": "Human-readable description."}Forbidden — insufficient permissions.
Media typeapplication/problem+json
object
type
required
string
title
required
string
status
required
integer
detail
required
string
Example
{ "type": "https://api.layer.ai/errors/ERROR_CODE", "title": "Error Title", "status": 400, "detail": "Human-readable description."}Resource not found.
Media typeapplication/problem+json
object
type
required
string
title
required
string
status
required
integer
detail
required
string
Example
{ "type": "https://api.layer.ai/errors/ERROR_CODE", "title": "Error Title", "status": 400, "detail": "Human-readable description."}Invalid input parameters.
Media typeapplication/problem+json
object
type
required
string
title
required
string
status
required
integer
detail
required
string
Example
{ "type": "https://api.layer.ai/errors/ERROR_CODE", "title": "Error Title", "status": 400, "detail": "Human-readable description."}Rate limited — too many concurrent requests.
Media typeapplication/problem+json
object
type
required
string
title
required
string
status
required
integer
detail
required
string
Example
{ "type": "https://api.layer.ai/errors/ERROR_CODE", "title": "Error Title", "status": 400, "detail": "Human-readable description."}Internal server error.
Media typeapplication/problem+json
object
type
required
string
title
required
string
status
required
integer
detail
required
string
Example
{ "type": "https://api.layer.ai/errors/ERROR_CODE", "title": "Error Title", "status": 400, "detail": "Human-readable description."}