Ai Agent Regression Testing After A Prompt Or Model Change
Source
openrouter.ai
Author
OpenRouter editorial sitemap
Date
Context
An AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition → can phrase an answer differently while still doing the right thing, so regression tests need to examine behavior. OpenRouter's testing guide recommends fixed cases with explicit requirements: which software action should run, which arguments it should receive, and which business rules must remain intact. For a model comparison, it holds prompts, tools, cases and grading constant while changing the model. Selecting concrete model versions also avoids an automatically updated model alias changing the experiment unnoticed.
Terms in this piece · Glossary
AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
