Chain-of-Thought (CoT) Prompting Link to heading

Chain-of-Thought (CoT) Prompting is when the model is prompted to generate intermediate reasoning steps (show its intermediate reasoning steps explicitly) before arriving to the final answer.

  • Useful for tasks involving reasoning, math, logic, or multi-step problem-solving.
  • Mimics how humans often solve complex problems—by breaking them down into smaller, logical steps (“thinking out loud”).
  • Increases accuracy for complex reasoning tasks.

Chain-of-Thought Prompting / Reasoning is like thinking out loud. Instead of just giving an answer, the AI walks through the logic step by step.

CoT Reasoning Breakdown Link to heading

Here’s a breakdown of Chain-of-Though reasoning:

  • “Chain” refers to a sequence of connected thoughts or steps.
  • “Thought” refers to each individual reasoning step.
  • The goal is to improve accuracy and transparency in the model’s decision-making by making its reasoning process explicit.

Why is Chain-of-Thought Useful? Link to heading

  • Helps the model break down complex / multi-step problems into smaller / simpler intermediate steps.
  • Makes the model’s output more interpretable and trustworthy.
  • Can be used in prompt engineering to guide models toward better answers.
  • Allows for debugging the thought process of the model

Implementing CoT with Zero-Shot Prompting Link to heading

To trigger Chain-of-Thought in a Zero-Shot prompt, add the following line to your prompt.

“Let’s think step by step”

Example of Chain-of-Thought Prompting with Zero Shot Prompting:

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User Prompt:
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Question: If Frodo has 3 lembas breads and eats 1, then finds 2 more, how many does he have?

Let's think step by step.

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Possible model output:
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- Frodo starts with 3.
- He eats 1 → now he has 2.
- He finds 2 more → now he has 4.

Final Answer: 4

Combining CoT with One-Shot / Few-Shot Prompting Link to heading

It’s a good idea to break down the chain of though in the examples provided to the model when using One-Shot or Few-Shot prompting.

📚 Resources / References Link to heading