LLM judge rubrics in 2026: promptfoo vs DeepEval vs my builder
LLM judge rubrics in 2026: promptfoo vs DeepEval vs my builder Use promptfoo if your evals already live in YAML and CI. Use DeepEval if you're in pytest and want G-Eval's generated reasoning steps. Write and validate the rubric before either tool sees it. On my 40-reply test, fixing the rubric moved agreement with my hand labels more than switching frameworks did. Explicit score anchors cut verdict flips more than any tool setting I touched. Quick disclosure: the LLM Judge Rubric Builder I link…