# tinker_cookbook.exceptions.EvalTimeoutError

## _class_ [**tinker_cookbook.exceptions.EvalTimeoutError**](https://github.com/thinking-machines-lab/tinker-cookbook/blob/main/tinker_cookbook/exceptions.py#L235)( _[EvalError](https://tinker-docs.thinkingmachines.ai/cookbook/api-reference/exceptions/evalerror/), TimeoutError_)

A single evaluation example exceeded its time limit.

Raised when `asyncio.wait_for` hits the per-example timeout configured via `BenchmarkConfig.timeout_seconds`. The example is scored as a failure (reward=0) with `error="timeout (Ns)"`.

Timeout thresholds vary by benchmark type:

- Single-turn programmatic grading: 60–300s
- Single-turn with LLM judge: 300–600s
- Code execution in sandbox: 300–600s
- Multi-turn agent interaction: 600–1800s

Users can adjust via `BenchmarkConfig.timeout_seconds`. If a benchmark frequently times out, consider increasing the timeout rather than treating it as a bug — some benchmarks are inherently slow (e.g., multi-turn SWE tasks on large codebases).