Claude Prompting Guide: Techniques That Actually Work

Why Claude Needs a Different Prompting Style

Claude is trained differently from OpenAI's models. If you use the same prompts that work with GPT-4, you'll often get overly chatty answers, ignored formatting instructions, and inconsistent behavior.

When you use the right techniques, Claude excels at:

Long-context reasoning (up to 200K tokens)
Precise instruction following
Research, analysis, and document processing
Enterprise workflows (legal, finance, support)

1. Use XML Tags to Structure Your Prompt

Claude pays special attention to XML-style tags like <instructions>, <context>, <examples> and largely ignores random symbols like ### or ---.

Do this:

<context>
You are a senior content strategist for a global SaaS company.
</context>

<instructions>
Write a 1,200-word SEO article titled "AI Prompts for Customer Service."
- Target keyword: "AI prompts for customer service"
- Include an FAQ section with 8-10 questions
- Use clear, professional but approachable language
</instructions>

<examples>
[Include 1-2 short examples of the desired tone]
</examples>

Using XML tags makes your prompt more predictable and easier to reuse. For structured frameworks, see our advanced prompt frameworks guide.

2. Be Direct, Concise, and Specific

Claude works best when you clearly state what it should do, rather than what it should avoid.

Good (positive instructions):

• Write in clear, professional English
• Use short paragraphs and subheadings
• Keep the tone helpful and practical

Weak (vague/negative):

• Don't be too casual
• Don't use too many bullet points
• Try to be professional

3. Prefill the Assistant's Message

Claude tends to add introductory sentences like "Here is a detailed guide..." To fix this, prefill the first token so Claude starts exactly where you want.

<instructions>
Write a 300-word product description for a solar lantern.
- Focus on durability, battery life, and safety
- Use simple, persuasive language
</instructions>

Prefilling the assistant's message ensures that Claude's response aligns perfectly with your expectations.

4. Use Chain-of-Thought Prompts

Guide Claude through a step-by-step process to ensure it understands the task thoroughly.

<instructions>
Step 1: Identify the key features of the solar lantern.
Step 2: Highlight the benefits of these features.
Step 3: Write a compelling introduction.
Step 4: Create the main body with subheadings.
Step 5: Include an FAQ section addressing common queries.
</instructions>

Chain-of-thought prompts help Claude break down the task and produce a more coherent response.

5. Provide Few-Shot Examples

Show Claude how you want the output to look by providing 1-2 examples.

<examples>
Example 1: 
The Solar Lantern is a durable and reliable product designed for outdoor use. With a long battery life, it ensures consistent lighting even in remote areas. Safety features include overcharge protection and flame-retardant materials.

Example 2: 
This solar lantern offers superior durability and longevity, making it ideal for camping and emergency situations. Its advanced battery technology provides hours of light, and safety features ensure peace of mind.
</examples>

Few-shot examples help Claude understand the desired tone and structure of your output.

6. Use Prompt Chaining

Break down complex tasks into smaller, manageable prompts to ensure accuracy and completeness.

<prompt1>
Identify the key features of the solar lantern.
</prompt1>
<prompt2>
Highlight the benefits of these features.
</prompt2>
<prompt3>
Write a compelling introduction.
</prompt3>
<prompt4>
Create the main body with subheadings.
</prompt4>
<prompt5>
Include an FAQ section addressing common queries.
</prompt5>

Prompt chaining allows you to build a comprehensive response by addressing each part of the task separately.