Agent Evaluation: What to Measure (Beyond ‘Seems Good’)

Agentic AI 18 min min read Updated: Feb 26, 2026 Beginner
Agent Evaluation: What to Measure (Beyond ‘Seems Good’)
Beginner Topic 1 of 8

Agent Evaluation: What to Measure (Beyond ‘Seems Good’)

Why evaluation is hard

Agents do multi-step work, so failures can be subtle: wrong tool called, missing constraint, or incorrect assumption.

Core metrics

  • Task success rate
  • Tool-call accuracy
  • Hallucination/ungrounded claim rate
  • Latency and cost
  • User correction rate

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