The Katalon Blog

Metrics That Matter for Agentic Testing

Written by Richie Yu | Oct 13, 2025 5:00:00 PM

TL;DR 

Traditional test metrics like automation %, pass/fail rates, and defect counts don’t reflect the impact of introducing agents into the QA process. This blog explores a new class of KPIs designed to measure how well your virtual test team is performing  including Agent Assist Rate, Human Override Rate, Scenario Coverage Delta, and Review Time Saved. These metrics focus on insight, collaboration, and confidence, not just execution speed helping QA leaders understand where agents are truly adding value, and how to scale them responsibly.

What gets measured shapes what gets built and what gets missed.

As more organizations begin experimenting with AI-augmented QA, the focus often starts with tooling: agents that summarize logs, draft test cases, or identify gaps. But adopting these tools without rethinking your measurement model is like upgrading the engine but keeping the speedometer from a bicycle.

In this blog, we explore the next generation of QA metrics not for evaluating the systems under test, but for understanding the impact, reliability, and maturity of your agent-augmented test team.

The future of testing performance isn't just “how fast” or “how many tests.” It’s:
How intelligently are we identifying risk and how confidently can we trust the agents helping us do it?

Why Legacy KPIs Don’t Cut It

Most testing orgs still track KPIs like:

  • % automated test cases
  • Pass/fail rates
  • Test execution time
  • Defects found per release

These metrics aren’t wrong but they’re incomplete in an agent-augmented model, because they:

  • Focus on execution, not insight
  • Ignore the collaboration layer between agents and humans
  • Don’t distinguish between human vs. machine-generated output
  • Miss whether testing is actually aligned to risk and change

A New Class of Metrics: Measuring the Virtual Test Team

Here’s what we should start tracking as we introduce agents into the QA lifecycle even in traditional software environments:

1. Agent Assist Rate

What it is:
The % of test cases, triage events, or summaries where an agent was used to accelerate or assist human decision-making.

Why it matters:

  • Tracks adoption of AI augmentation over time
  • Helps identify where agents are most useful
  • Supports capacity planning and ROI analysis

2. Human Override Rate

What it is:
How often agent suggestions (e.g., scenario drafts, priority tags) are corrected or rejected by humans.

Why it matters:

  • Indicates trustworthiness and maturity of the agent
  • Identifies where additional tuning or prompt engineering is needed
  • Enables “progressive autonomy”  increasing agent responsibility as confidence grows

3. Scenario Generation Coverage Delta

What it is:
The % of production or test session behavior not currently represented in existing test scenarios - as identified by an agent.

Why it matters:

  • Flags blind spots in regression coverage
  • Helps validate that you're testing what users actually do
  • Supports strategic test suite evolution

🔌 Tools like Katalon TrueTest already enable this kind of visibility by capturing manual test flows and turning them into reusable test assets  creating a baseline for agentic coverage tracking.

4. Review Time Saved (Per Test Asset)

What it is:
Tracks time saved when humans review and finalize agent-generated content  compared to manual authoring from scratch.

Why it matters:

  • Shows real-world productivity gains
  • Builds confidence in “review-and-release” workflows
  • Helps justify agent adoption to stakeholders and leadership

5. Scenario Reuse and Drift Rate

What it is:

  • Reuse rate: How often existing scenarios are reused across cycles
  • Drift rate: How often scenarios require rework due to changes in the system

Why it matters:

  • High reuse indicates good scenario modeling
  • Drift tracking helps identify test maintenance hotspots
  • Together, these metrics support long-term test strategy and stability

How These Metrics Support Better QA Strategy

If you're asking... These metrics help answer...
Are agents actually helping us? Agent Assist Rate, Review Time Saved
Can we trust what they generate? Human Override Rate
Are we testing the right things? Scenario Coverage Delta
Is our test suite stable? Reuse vs. Drift Rate
Where should we scale next? Agent adoption patterns + feedback loops

How to Start Capturing These Today

Even if you’re early in your journey, you can start building the telemetry and structure to support this:

  • Add agent metadata to test cases and defect logs (e.g., “AI-suggested,” “human-authored”)
  • Log agent-human interactions, including edits, overrides, and approvals
  • Track review time per asset (estimate or via IDE plugins/scripts)
  • Instrument test execution to link scenarios to session data (helps power coverage delta metrics)

This will set the foundation for governed, explainable agentic QA at scale and enable you to demonstrate value with data.

Final Thought: Testing Isn’t Just Changing - So Is How We Measure It

Legacy metrics were built for script authors and regression runners.
The new testing stack includes test architects, augmentation agents, and collaborative workflows. If we keep measuring the old way, we’ll miss the biggest shift of all:

The move from testing as execution, to testing as intelligence.

Coming Up Next:

Blog 9: Agentic QA as a Quality Operating Model
We’ll step back from individual agent roles and look at how a virtual QA team could operate as part of your broader delivery process  from governance to release readiness to defect prevention.