curl -X POST "https://api.tokenlab.sh/v1/batches" \
  -H "Authorization: Bearer sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "input_file_id": "file_abc123",
    "endpoint": "/v1/chat/completions",
    "completion_window": "24h"
  }'

{
  "id": "batch_abc123",
  "object": "batch",
  "endpoint": "/v1/chat/completions",
  "input_file_id": "file_abc123",
  "completion_window": "24h",
  "status": "validating",
  "output_file_id": null,
  "error_file_id": null,
  "created_at": 1706000000
}