Advanced – AI & ML Testing
Prompt Testing – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
Systematic evaluation of prompts sent to LLMs to measure output quality, consistency, and robustness against edge cases and adversarial inputs.
In simple words
Testing whether your prompts reliably produce the answers you want.
Exam tip
Version prompts like code and run regression suites — small prompt changes can dramatically shift model behavior.
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