# Belief-Trajectory Energy: Measuring the Path to a Prediction > Source: > Published: 2026-10-19 05:03:06+00:00 Large language models (LLMs) progressively revise their predictions across Transformer layers, yet we typically observe only the final output, discarding the trajectory through which it is formed. We introduce Belief-Trajectory Energy(BTE), a model-grounded measure that characterizes an input throug