Chain-of-Thought Prompting

Summary

Prompting a model to reason step by step before giving a final answer — dramatically improves performance on multi-step reasoning and math tasks.

• 1Compare direct-answer vs. 'think step by step' prompting on a reasoning task.
• 2Learn when chain-of-thought helps a lot (math, logic) vs. barely at all (simple lookups).
• 3Understand how reasoning models build this capability in natively rather than via prompting.