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LLM Evaluation · Observability · Agent Reliability2026

Parallax

Agent Reliability and LLM Evaluation Framework

ResearchEngineering

Parallax

Problem

Autonomous agents fail in ways unit tests miss — silent tool misuse, degraded reasoning, and recovery paths that never fire. Pass/fail suites do not measure detection lead time or diagnosis quality.

Approach

Designed ground-truth failure cases, semantic traces, fault injection, and rule-, ML-, and LLM-judge baselines for autonomous-agent regression testing.

Instrumented agent execution with OpenTelemetry and Jaeger to compare detection lead time, diagnosis quality, and recovery behavior.

Established repeatable reliability benchmarks across failure scenarios beyond simple pass/fail evaluation.

Results

LLM-as-judge · OpenTelemetry · failure benchmarks

  • Repeatable agent reliability benchmarks across injected failure scenarios
  • Measurable observability signals for detection lead time and recovery
  • Comparable rule, ML, and LLM-judge baselines on the same harness

Stack

LLM EvaluationOpenTelemetryAgent Reliability

What I learned

Reliability for agents is an evidence problem. Traces, judges, and recovery metrics matter more than a green checkmark on the happy path.

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