New Benchmark Shows Top LLMs Falter at Real Physics Reasoning
Introduces a four‑stage diagnostic using parallel physics worlds—including a counterfactual F=mv world, Aristotelian mechanics, and a decay‑world framework—to test if frontier models reason beyond pattern matching. Claude Opus 4.7, GPT‑5.5 and Gemini 3.1 Pro pass only 6‑out of 15 cases in the familiar worlds and none in the novel decay world, exposing a critical gap in genuine physics literacy.