FAQ - QA.tech Docs

When to Use AI Agents vs Scripts

Scenario	AI Agents	Scripts	Manual QA
Exploratory testing	✅ Best - discovers edge cases through varied behavior	❌ Fixed paths only	✅ Good - but slow and expensive
Regression testing	✅ Good - handles UI changes gracefully	✅ Best - fastest execution	❌ Too repetitive
Exact same steps every time	⚠️ Possible but overkill	✅ Best - fully deterministic	❌ Error-prone over time
Testing multiple user flows	✅ Best - tries different approaches automatically	⚠️ Need separate script per variant	✅ Good - but doesn’t scale
Complex calculations	❌ Use assertions in code instead	✅ Best - precise math	⚠️ Manual calculation prone to errors
Form filling with realistic data	✅ Best - understands context	⚠️ Need hardcoded test data	✅ Good - but tedious
Testing preview environments	✅ Best - automatic PR reviews	⚠️ Need CI/CD integration	❌ Requires manual coordination
First-time test coverage	✅ Best - AI Chat Assistant sets up quickly	❌ Requires upfront investment	⚠️ Slow to establish baseline

In practice, most teams use a combination: AI agents for exploration and edge cases, scripts for critical deterministic flows, and manual QA for subjective evaluation (design, UX, brand consistency).