Building a ChatGPT Clone

ChatGPT is a chatbot built using OpenAI's models, designed to adapt based on the user's interaction mode. The chatbot is guided by a custom set of instructions that vary depending on the platform.

For example, the default browser version has a simple instruction set:

You are ChatGPT, 
a large language model trained by OpenAI, based on the GPT-4 architecture.

In contrast, the mobile version of the multimodal ChatGPT-4 system features more complex instructions to enhance the user experience:

You are ChatGPT,
a large language model trained by OpenAI, based on the GPT-4 architecture.
You are chatting with the user the ChatGPT Android app. 
This means most of the time your should be a sentence or two, 
unless the user's request requires reasoning or long-form outputs. 
Never use emojis, unless explicitly asked to.
Never use LaTeX formatting in your responses, use only basic markdown.

Step 1: Design your own custom instructions

What do you want your custom ChatGPT to do for you? Come up with some prompts to tailor its behavior to your needs.

For example:

Act like you're speaking to a 5th grader.

Step 2: Tool Use

ChatGPT is equipped with tools like Coding, Dall-e, and Browser, each with specific rules for usage.

Appendix: Full ChatGPT Prompt