← Back to PeopleCHResearcherCasey HandmerPhysicist who tested Grok 4 with process-focused questions and found the model underperformed despite excelling on Physics Olympiad problems.1Mentions1Articles1OutletsAssociated TopicsLLMs1AI Benchmarks1Foundation Models1AI Products1Companies CoveredAnthropic1OpenAI1xAI1Coverage PatternsHow media typically covers Casey HandmerArticle Typesanalysis1Media Anglesproduct1Narrative Framingcompetitive1Associated AI ModelsGrok 41Grok 4 Heavy1Grok 31Claude Sonnet 41Claude Opus 41ArticlesMost recent first