Glossary · AI-native development
Regression Test
A repeatable check that protects behavior known to work, especially after code, prompt, model, retrieval, or tool changes.
Why it matters
AI system changes can improve average quality while silently reintroducing a previously fixed failure.
In practice
Turn a corrected prompt-injection incident into a permanent eval case that must pass before the next deployment.
Common confusion
A regression test guards a specific expected behavior. A broad benchmark estimates performance across a wider task distribution.
Related terms
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