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services/asf-ai/app/usage.py

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+"""Usage record (for billing / metering later)."""
+
+from __future__ import annotations
+
+from datetime import datetime
+from typing import Optional
+from uuid import UUID
+
+from pydantic import BaseModel
+
+
+class UsageRecord(BaseModel):
+    tenant_id: UUID
+    project_id: Optional[UUID] = None
+    job_id: Optional[UUID] = None
+    execution_id: UUID
+    provider: str
+    model: str
+    capability: str
+    input_tokens: Optional[int] = None
+    output_tokens: Optional[int] = None
+    gpu_seconds: Optional[float] = None
+    estimated_cost: Optional[float] = None
+    duration_ms: Optional[int] = None
+    recorded_at: datetime