P95 and P99 Latency in Agent Metric Monitors

P95 and P99 are now selectable in the Agent metric monitor aggregation dropdown, with support for both ML-based and manual thresholds. P50 remains available under the existing Median option.

Tail latency is where agent reliability problems show up, and a single slow tool call can drag down an entire run. With P95 and P99 alerting, you can monitor tail latency on your agents directly.