Best Custom Instructions for ChatGPT (Ultimate Guide for 2026)

Summarize This Article:

Custom Instructions are a great way to tailor the responses by ChatGPT. This feature was launched in 2023 and is available to all users, including those on the free tier. If you have been using and treating ChatGPT like a Google search bar for all these years, you’ve been using ChatGPT wrong.

Now, if you are looking for a way to make the best out of your ChatGPT experience, you’ve come to the right place. In this guide, we will look at why and how to enable custom instructions, and why it matters. We will also show you how to create these custom instructions and how you need to use them.

Why Do Custom Instructions Matter in 2026?

Custom Instructions help you teach ChatGPT to respond in a particular manner so that it adds a specific response to every answer that it generates. Having these custom instructions is telling ChatGPT that you want responses in a format and even giving it instructions on what to add or skip from its responses.

A lot of the time, ChatGPT will give you long responses, sometimes with unnecessary information, but with Custom Instructions, you can ask ChatGPT to skip the unnecessary info and give you answers that are relevant to the prompt or query that you have asked it. Having relevant responses helps you to save time, which would otherwise be lost reading through answers that might not have any relevance to your prompt or query.

What Are Custom Instructions in ChatGPT?

Custom Instructions are simply instructions that the user gives to ChatGPT to follow. These instructions help to customize and tailor the response according to your needs. Anyone and everyone can make use of custom instructions to suit their use case.

Now, anyone and everyone can make use of these Custom Instructions. Here’s how you can set them up.

Set up Custom Instructions on Web and Desktop

Open up ChatGPT in your web browser and sign in with your account.
Now, click on your name in the left corner and click on Settings.
Select Personalization.
You should see the Custom Instructions text box.
Here you can enter your instructions and click on the Save button.

Set up Custom Instructions on ChatGPT Mobile App

Launch the ChatGPT app on your Android or iOS device
Tap on the hamburger icon at the top left and tap on your username.
Now, tap on Personalization.
You will see the Custom Instructions text box. Type in your instructions and then tap on the checkmark icon in the top right corner.

How Do Custom Instructions Work in ChatGPT?

Custom Instructions in ChatGPT work based on the text input that you give it. You can tailor and personalize your responses by adding details about yourself, such as your nickname, occupation, and maybe a small description about yourself. Once you have this info entered, ChatGPT will use this info and the custom instructions to give you tailor-made responses.

ChatGPT will add up to 1500 characters per text field from your custom text as context for each chat session to deliver the response based on your instructions. It will also factor in certain characteristics for the tone and style of your liking. You can choose to have a more friendly or more professional tone of voice, choose whether to create headers and lists in its response, and also choose to have more or less emoji usage in its responses.

Benefits of Using Custom Instructions in ChatGPT

There are a lot of benefits to using custom instructions. Once you give ChatGPT an idea of, for example, what your occupation is, every time you ask ChatGPT for something, it will give you answers by taking your occupation as context. In short, personalized responses.

You also save a lot of time since you don’t have to keep repeating details to ChatGPT. And because ChatGPT has these details, it will also respond quickly to you by taking your instructions into context. You also get consistent responses in the form of a specific tone, format, style, and other formatting styles if you have previously instructed.

Best Custom Instructions for ChatGPT

Now, let’s take a look at several custom instructions that you can try to enhance your ChatGPT responses. Do use these templates and see for yourself how they work.

There are two boxes, so in the first box, you can describe yourself and what you do. In the second box, you can ask ChatGPT to respond in a particular manner.

Example 1
Box 1: I am a mathematics teacher preparing lesson plans for grade 6.
Box 2: Respond in a manner that can be easily understood by 6th graders.

Example 2
Box 1: I am a beginner in video editing who uses Adobe Premiere Pro
Box 2: When I search for anything video editing related, it needs to be focused on Adobe Premiere Pro and keep the explanation as simple as possible.

Example 3
Box 1: I am a tech content writer for smartphones
Box 2: Give me a summary at the end of a response and include the price of the smartphone converted into US dollars.

Example 4
Box 1: I am a photographer who specializes in travel photography and usually captures nature and public transportation.
Box 2: Give me suggestions of places where I can find a lot of people and public transportation whenever I search for any city or town. Also, provide me with a timetable for the public transportation services in the form of a table.

Advanced Custom Instructions Strategies for 2026

While it is easy to create simple instructions, the need to have a structured set of instructions is also necessary to maximize the quality of the responses. It wouldn’t make sense to create a custom instruction only to receive responses that aren’t perfect or to the point. So, here are three key elements that you need to use when you are creating custom instructions for ChatGPT.

Be Specific

When you are describing yourself, a role, or any activity, always add details. Giving more details will help ChatGPT get responses that are an exact match to your description. You can also add instructions to ChatGPT to avoid responses that contain text such as AI disclaimers and avoid or skip biased responses.

Instructions Framing

Framing and layering your instructions is important. This helps ChatGPT to not only give you the responses, but also allows ChatGPT to understand the styling, formatting, and anything that could be relevant to whatever you search for via ChatGPT. Adding following up instruction questions will give you better responses. Now, for this to work, you will have to craft your instructions in a way that makes sense to add a follow-up.

Tailored Instructions

You will get a response from ChatGPT based on the prompt you input. So, when adding custom instructions, make sure to add elements such as dates and years, and ask it to avoid certain elements. Again, these will all change based on the type of instructions you give and the prompts that you input into ChatGPT.

Custom Instructions and Memory: What’s The Difference?

These are very different in their own way, even though to some users it might feel like they are similar. Both of them have different functions and use cases. Here is a table that we have created to understand the difference between custom instructions and memory.

Main Feature	Custom Instructions	Memory
Cases	Perfect for fixed queries	Perfect for ever-changing queries during chat sessions.
Setting Up	Manually have to add the instructions as well as the response style	Uses details from previous chats that have been saved in history
Response Style	Consistent and fixed response style for all queries	Response styles can vary depending on the query raised by the user.
Access Style	Custom instructions work for all types of chats.	Ever-changing details are stored as conversations in the chat history during each chat session.

Common Mistakes to Avoid

Here are some of the common mistakes many users make when creating custom instructions.

Don’t use descriptive words. Basic words will only generate a basic response, which will not be helpful at all.
Do not exceed the 1500-character limit while typing your custom instructions. Exceeding it will result in conflicting or irrelevant responses.
Not changing your custom instructions. Always try to modify or update your instructions so that ChatGPT can provide you with updated responses and data.
Avoid conflicting instructions. Instructions like give me explanations with examples, but keep it short. Such instructions are unclear, and you’ll get standard responses, which are not going to be helpful to you.

Optimizing your Custom Instructions

When setting up your instructions, be sure to align your goals with the instructions. For example, if you work in a particular profession and use ChatGPT to look for open vacancies or skills you need to improve. So, when you are adding your instructions in box 1, you need to describe your role, add the type of software that you use, and your experience.

Now, in the second box, you will have to add skills that cater to your profession; in short, add the keywords that are synonymous with your profession. This will help ChatGPT to give you responses that are relevant and easily match your instructions.

Depending on how satisfied you are with the results, you also need to tweak the instructions so that you can get better responses and results. You can choose to add or switch around different keywords, as long as your custom instructions do not have conflicting words.

Frequently Asked Questions

Q. What are the best custom instructions for ChatGPT?

Never use any form of emojis at all. All responses should be emoji-free.
Stay anonymous- do not reveal that you are an AI
Avoid inserting all sorts of AI disclaimers
Avoid inserting summaries into everything unless requested
Answer all queries as if you are a scholar who has insightful information.
Avoid apologies of all types.
Keep responses unique and avoid repetitive answers
Breakdown complex level answers into small but meaningful paragraphs.
Provide 2 follow-up questions after the responses.

Q. How long can the custom instructions for ChatGPT be?

You can have a total of 1500 characters per text field. That means the about you section can have 1500 characters, and the custom instructions section can also have 1500 characters.

Q. Do custom instructions affect all chats?

Yes, custom instructions will impact all chats as ChatGPT will follow these instructions at all times.

Q. Can ChatGPT remember my business?

Yes, ChatGPT can remember anything and everything you tell it. ChatGPT will auto-reference context from previous chats. But, if you want, you can always tell ChatGPT to remember specific things.

Q. Are the custom instructions private?

Yes, these instructions are private and are tied to your ChatGPT account. No one else can request or ask for your custom instructions unless you decide to share these instructions with someone else.

Q. Can teams share custom instructions?

For standard ChatGPT accounts, no, you cannot share the custom instructions. But, if you’re part of the Enterprise, Pro, or Business plans with a shared project, there are Project Instructions that can be shared with other users who are part of the project.

Closing Thoughts

This concludes everything you need to know about custom instructions, how you can use them, and also the important points to keep in mind when creating or setting up your custom instructions. So, will you be using these custom instructions when you are using ChatGPT, or are you planning to use ChatGPT just like how you use Google search? Share your thoughts in the comments below.

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