# BenchmarkEvent

**Kind:** Type

**Source:** [`atloria-monorepo/libs/agent-core/src/benchmark/types.ts`](https://github.com/sherkety/atloria/blob/main/atloria-monorepo/libs/agent-core/src/benchmark/types.ts#L274)

Typed events emitted by BenchmarkRunner for monitoring.

## Definition

```ts
| { type: 'run_start';    totalTasks: number; suite: string; model: string }
  | { type: 'task_start';   taskId: string; difficulty?: string; index: number; total: number }
  | { type: 'tool_call';    taskId: string; toolName: string; inputPreview: string }
  | { type: 'tool_result';  taskId: string…
```