Stop Choosing Models by Feel: Turn LLM Evaluation, Red Teaming, and CI into a Repeatable Workflow with Promptfoo
The hardest part of maintaining an LLM application is often not connecting a model, but knowing why answer quality changed. Promptfoo brings prompts, models, test cases, assertions, and red-team scans into one CLI and library workflow, so model comparisons, regression tests, and security checks can run locally and in CI/CD. This article builds a practical evaluation process and explains where Promptfoo fits, how to adopt it, and what limitations still require engineering judgment.