Personalized deep research systems need evaluation with real users because LLM judges overlook nuanced errors that matter to researchers.
**Distinguishing Focus:** What exactly is meant or needed, and how to restrict the response to that
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Language Models Don't Know What You Want: Evaluating Personalization in Deep Research Needs Real Users
Personalized deep research systems need evaluation with real users because LLM judges overlook nuanced errors that matter to researchers.