Dev Tools · 1h ago
LLM Apps Need Custom Observability: Tracing, Cost, Eval Loops
Standard APM tools miss key LLM metrics like token spend and quality drift. This article outlines three pillars: tracing across retries and fallbacks, real-time cost tracking per route, and eval loops to catch regressions. A Rust-based AI gateway example shows how to implement these with OpenTelemetry and Prometheus.
Meridian48 take
The piece correctly identifies a gap in LLM monitoring but glosses over the operational complexity of maintaining eval loops at scale.
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Observability for LLM Apps: Tracing, Cost Tracking, and Eval Loops →
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