> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fiddler.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# AlertCondition

> Alert trigger conditions for metric comparisons.

Alert trigger conditions for metric comparisons.

Defines the comparison operator used to evaluate whether an alert should trigger
based on the metric value and threshold.

## GREATER

Trigger when metric value > threshold.
Common for drift detection, error rates, latency spikes.

## LESSER

Trigger when metric value \< threshold.
Common for accuracy drops, traffic decreases, availability issues.

### Example

```python theme={null}
# Alert when data drift exceeds 5%
drift_alert = AlertRule(
        condition=AlertCondition.GREATER,
        threshold=0.05
    )

    # Alert when model accuracy drops below 90%
    accuracy_alert = AlertRule(
            condition=AlertCondition.LESSER,
            threshold=0.90
        )
```

## GREATER *= 'greater'*

## LESSER *= 'lesser'*