const options = {method: 'GET', headers: {Authorization: '<api-key>'}};

fetch('https://platform.toloka.ai/api/v2-beta/runs/{runId}/cost', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

curl --request GET \
  --url https://platform.toloka.ai/api/v2-beta/runs/{runId}/cost \
  --header 'Authorization: <api-key>'

import requests

url = "https://platform.toloka.ai/api/v2-beta/runs/{runId}/cost"

headers = {"Authorization": "<api-key>"}

response = requests.get(url, headers=headers)

print(response.text)

{
  "computedAt": "2023-11-07T05:31:56Z",
  "runId": "<string>",
  "total": "0.3"
}