ReasoningLens: Hierarchical Visualization and Diagnostic Auditing for Large Reasoning Models

ReasoningLens is an open-source framework designed to enhance the transparency of Large Reasoning Models by providing hierarchical visualization and diagnostic auditing of reasoning chains. It structures reasoning traces into interactive hierarchies, automates error detection through an agentic auditor, and synthesizes systemic reasoning profiles to identify model-specific blind spots. This framework is significant for practitioners as it facilitates the interpretation, debugging, and optimization of complex reasoning processes in AI systems.