# Interface ObserverCostMetrics

Cost tracking per session.

interface ObserverCostMetrics {
totalCostUsd: number;
costPerModel: Map<"claude" | "gemini" | "codex" | "opencode", number>;
}

- Defined in packages/nexus-agents/src/agents/observability/orchestration-observer-types.ts:78

##### Index

### Properties

totalCostUsd
costPerModel

## Properties

### totalCostUsd

totalCostUsd: number

- Defined in packages/nexus-agents/src/agents/observability/orchestration-observer-types.ts:79

### costPerModel

costPerModel: Map<"claude" | "gemini" | "codex" | "opencode", number>

- Defined in packages/nexus-agents/src/agents/observability/orchestration-observer-types.ts:80