Eval workflow for agentic builders: fork any prompt through baseline vs scaffolded agents, blind third-party judge.

Built an n8n eval workflow that A/B tests any prompt through plain GPT-4o vs GPT-4o + a reasoning scaffold, judged by a blind Gemini evaluator Solo founder here. I've been building a cognitive infrastructure API (Ejentum) and needed a way for builders to evaluate it on their own agent tasks instead of trusting my benchmarks. So I published the eval as an n8n workflow. What it is A three-agent n8n workflow. You paste any prompt in the chat trigger. The prompt fans out through two identical GPT-4o