transcription-cost-usage-report/backend/app/schemas/usage_cost_update_schema.py

from pydantic import BaseModel, Field
from typing import List, Optional, Literal

class UpdateUsageCostRequest(BaseModel):
    company_ids: Optional[List[str]] = None
    start_date: str
    end_date: str
    product: str
    price: float
    billing_unit: int