How to Write Prompts for ChatGPT vs Claude: Key Differences

ChatGPT and Claude are both excellent AI assistants, but they have different personalities and respond better to different prompting styles. Understanding these differences helps you get better results from each.

The Core Differences

ChatGPT's Style

ChatGPT tends to be more enthusiastic and eager to help. It works well with direct instructions and role-playing. It can sometimes be overly confident, even when uncertain.

Claude's Style

Claude is more measured and thoughtful. It's explicit about uncertainty and often thinks through problems more carefully. It responds well to structured, detailed prompts.

Prompting for ChatGPT

Use Role Assignments

ChatGPT responds strongly to "You are a..." prompts. This sets the tone for the entire conversation.

You are an expert copywriter who specializes in SaaS landing pages. Write a headline for...

Be Direct

ChatGPT likes clear, direct instructions. Don't overthink it—just say what you want.

Use Numbered Steps for Complex Tasks

Break complex requests into numbered steps. ChatGPT follows these well.

Prompting for Claude

Provide Rich Context

Claude excels when you give it thorough background information. More context = better output.

Use XML-Style Tags

Claude responds well to structured prompts using XML-style tags for organization.

<context>
I'm building a SaaS product for...
</context>

<task>
Help me design the user onboarding flow.
</task>

Ask for Reasoning

Claude is excellent at showing its reasoning. Ask it to "think through this step by step" for complex problems.

What Works for Both

• Being specific about what you want
• Providing examples when consistency matters
• Specifying output format
• Iterating through follow-up prompts

What to Avoid

With ChatGPT

• Don't assume it will express uncertainty—ask explicitly if you need it
• Avoid overly complex, nested instructions

With Claude

• Don't be too terse—Claude benefits from context
• Avoid asking it to "just do it" without explanation if you want quality

Practical Example

Same Task, Different Approaches

For ChatGPT:

You are a senior product manager. Write user stories for a shopping cart feature. Include acceptance criteria. Format as bullet points.

For Claude:

<context>
We're building an e-commerce platform for small businesses. Our users are non-technical shop owners who need a simple checkout experience.
</context>

<task>
Write user stories for a shopping cart feature. For each story:
- Use the format "As a [user], I want [feature] so that [benefit]"
- Include 2-3 acceptance criteria
- Note any edge cases to consider
</task>

Both approaches work, but matching the style to the model gets better results.