🧠 How to Make ChatGPT Work Like Claude AI: Prompt Engineering & Setup Guide

Claude AI by Anthropic is known for its conversational tone, adherence to safety, ability to follow instructions in longer documents, and a more polite, collaborative style.

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If you’re a developer, researcher, or AI enthusiast who loves Claude’s style but wants to achieve something similar using ChatGPT, here’s how you can replicate Claude’s behavior with a well-structured system prompt, proper role assignment, and clear interaction setup.

✅ Step-by-Step Guide to Make ChatGPT Behave Like Claude AI

🔧 1. Understand Claude’s Traits

Claude AI is often:

Helpful and harmless (aligned with Constitutional AI)
Transparent and cautious in responses
Collaborative and empathetic
Structured in explanations
Detailed and honest, especially when it can’t answer
Good at summarization and document reasoning

📜 2. Master Prompt Engineering: Create the Right System Prompt

Here’s a working Claude-like system prompt for ChatGPT:

✅ Claude-Like System Prompt for ChatGPT (Use as Custom Instructions or API `system` prompt)

Prompt : You are Claude, an AI assistant created by Anthropic. You are helpful, honest, harmless, and deeply respectful. Your responses are thoughtful, transparent, and often include reasoning behind your suggestions. You prefer to say “I don’t know” rather than fabricate information.

You are collaborative, empathetic, and good at handling complex tasks like summarization, rewriting, and analysis of long documents. You structure answers clearly using bullet points or numbered lists where applicable.

Always include context or clarification if a question is ambiguous. Keep the user’s safety, ethical considerations, and intent in mind. Never provide dangerous or prohibited content.

🧪 3. Testing Prompt in ChatGPT Playground or Custom GPT

If you’re using:

🔹 ChatGPT Plus (Custom GPT)

Go to https://chat.openai.com/gpts
Click “Create”
Add the system prompt above
Choose a Claude-like name like “ClaudeGPT”
Optional: Upload a default personality style like “gentle tone”, “collaborative strategist”

🔹 OpenAI Playground (API usage)

Paste the same system prompt in the system role
Add your user messages for testing
Use gpt-4o model for Claude-like multi-modal behavior

🎯 4. Ideal Prompting Style to Interact with ClaudeGPT

To get the best results:

Use instructions like:

“Can you help me summarize this in a friendly tone?”
“Rewrite this section with more empathy.”
“Tell me the pros and cons, but keep it objective and balanced.”
“If you don’t know something, feel free to say so.”

💡 Example Interaction

User Prompt:

Can you summarize the following legal agreement in simple terms for a non-lawyer?

ClaudeGPT-like Output:

Sure! Here’s a simplified summary of the legal agreement:

Parties Involved: The agreement is between [Company A] and [Company B].

Purpose: It outlines how [Company A] will provide [Service] to [Company B].

Duration: The agreement is valid for 12 months from the signing date.

Payment Terms: Company B agrees to pay a fixed monthly fee.

Confidentiality: Both parties agree to keep sensitive information private.

Termination Clause: Either party can terminate the agreement with a 30-day notice.

Let me know if you want this in a more conversational tone!

🤖 Claude-Like Capabilities You Can Simulate

Claude Trait	ChatGPT Action with Prompt Tuning
Friendly & thoughtful	Use tone prompts like “empathetic”, “non-judgmental”, “caring”
Document understanding	Use `file` or `long context` models like `gpt-4o` or API streaming
Cautious & transparent	Add rules in prompt: “Never guess; explain if unsure.”
Harmless content	Add filters: “Avoid unsafe, biased, or speculative info.”

📥 Downloadable Prompt Template

You can copy or save the following .txt file format:

🧩 BONUS: Add Claude-Like Roles for Complex Tasks

You can add BMAD agents (Brainstormer, Manager, Architect, Developer) to simulate collaborative Claude conversations:

📊 Summary

Step	Description
1	Understand Claude AI’s behavior
2	Create a system prompt to emulate Claude
3	Use in ChatGPT custom GPT or API
4	Interact using Claude-style prompts
5	Add collaborative Claude-like roles for complex workflows

🏁 Final Thoughts

While ChatGPT and Claude AI have different architectures, you can simulate Claude’s essence in ChatGPT with strategic prompt engineering. For teams who need thoughtful, ethical, and structured assistance, this setup can mirror the Claude experience inside ChatGPT.

Here are some valuable external links for your article “How to Make ChatGPT Work Like Claude AI: Prompt Engineering & Setup Guide” that provide credibility, background, and additional learning:

🔗 External Reference Links

Anthropic’s Claude AI Overview
https://www.anthropic.com/index/claude
Official page to understand Claude’s capabilities, design principles, and safety architecture.
Anthropic’s Constitutional AI Whitepaper
https://www.anthropic.com/constitutional
Learn how Claude uses a rule-based AI alignment system to remain helpful, harmless, and honest.
OpenAI Custom GPT Guide
https://platform.openai.com/docs/guides/gpt/customizing
Step-by-step on how to create your own GPT with a system prompt and memory.
OpenAI Prompt Engineering Guide
https://platform.openai.com/docs/guides/prompt-engineering
Best practices to craft effective prompts that mimic specific behavior (like Claude).
Anthropic vs OpenAI Comparison (Forbes)
https://www.forbes.com/sites/johanmoreno/2024/03/10/chatgpt-vs-claude/
An editorial analysis comparing Claude and ChatGPT in real-world usage.
Claude vs ChatGPT Reddit Discussion
https://www.reddit.com/r/ChatGPT/comments/15x4zjk/claude_ai_vs_chatgpt/
Community input on Claude’s tone, strengths, and where it outperforms ChatGPT.
AI Agents with BMAD Framework
https://www.linkedin.com/pulse/building-ai-agent-teams-bmad-framework-ruchir-jain/
Learn how the BMAD agent model supports collaborative, role-based AI development.