How Does Thinking Mode Change LLM Moral Judgments? A Controlled Instant-vs-Thinking Comparison Across Five Frontier Models

This study investigates how enabling reasoning mode in large language models (LLMs) affects their moral judgments. By comparing five advanced models across 100 scenarios, the research finds that while overall agreement remains high between instant and thinking modes, significant disagreements arise in specific cases. The introduction of reasoning mode appears to enhance consistency among models, particularly in contentious scenarios.