{"type": "article", "title": "Iris vs Langfuse vs Phoenix vs Promptfoo: where each wins, where each loses", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/iris-vs-langfuse-vs-phoenix-vs-promptfoo-where-each-wins-where-each-loses", "original_source": "https://dev.to/irparent/iris-vs-langfuse-vs-phoenix-vs-promptfoo-where-each-wins-where-each-loses-3kca", "published": "2026-10-01T21:55:28+00:00", "accessed": "2026-10-01", "id": "iris-vs-langfuse-vs-phoenix-vs-promptfoo-where-each-wins-where-each-loses"}