Test LLM prompts like unit tests: Promptfoo turns evals into reviewable YAML
KhuyenTran16 · x · 2026-10-22
Prompt testing usually starts as a few examples pasted into a chat window, but becomes inconsistent when prompts change. The post introduces Promptfoo, which turns prompt evaluation into YAML unit tests — each test defines input, provider, and expected behavior. Configs can be committed, reviewed in pull requests, and run across OpenAI, Anthropic, Gemini, or local models.
Related event: Promptfoo Turns LLM Prompt Testing into YAML Unit Tests(2 posts)→
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