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The Metrics page shows rolling aggregations over the time window selected in the top-right picker. Every chart is interactive — click a point to drill into the underlying traces.

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Charts

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Volume

Trace count per bucket. First thing to check after a deploy — sudden drops mean the ingest is broken; sudden spikes mean something looped.

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Error rate

Fraction of traces with setError() or uncaught exceptions. Dashed overlay shows the previous period for comparison.

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Latency percentiles

p50, p95, p99 of trace wall-clock duration. Toggle by metric to overlay. Most teams treat p95 as the SLI.

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Cost

Sum of (prompt_tokens + completion_tokens) × model_price per bucket. Split by model on click to see which model dominates.

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Feedback positive rate

Fraction of feedback-labeled traces with label="good". Low-signal if feedback volume is low — watch the companion count chart.

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Eval pass rate

Fraction of pass labels over the eval runs in the window. Per-evaluator breakdown via the metric picker.

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Filters

Apply across all charts on the page:
  • Project
  • Environment (production / staging / your custom labels)
  • Model
  • Metadata key/value — e.g. metadata.tier = "pro" or metadata.feature = "rag_v2"
Filters persist in the URL, so you can bookmark a view.

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Drilling down

  • Click any point on a chart → jump to Traces filtered by that bucket and current filters
  • Click a model label in the legend → filter all charts to that model
  • Right-click a chart → Copy embed URL for sharing with teammates

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Via API

curl "https://api.trulayer.ai/v1/metrics?project_id=rag-app&from=2026-04-19T00:00:00Z&to=2026-04-19T23:59:59Z" \
  -H "Authorization: Bearer $TRULAYER_API_KEY"
Returns latency percentiles, error rate, total cost, trace count. See API reference.