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Build Your Ideal Customer Profile (ICP) GPT

Learn how you can drive 40% more revenue by building an ICP GPT, including a copy-and-paste prompt you can use immediately.

Explore HubSpot's AI-Powered Marketing Software, designed to help you attract, convert, and engage high-intent visitors.

What is an Ideal Customer Profile (ICP)?

An Ideal Customer Profile (ICP) defines the company most fit for your product or service. An ICP includes specific details, such as firmographic and industry data, that describes which organization would benefit the most from what you’re selling (and has the budget and means to buy it).

For example, Zapier describes their ICP as “Fast-growing companies with 50-500 employees that use 5+ disconnected software tools, have dedicated operations teams, and lose 10+ hours weekly to manual data entry between systems.”

Why Build an ICP GPT?

Ashley Faus Headshot.

In an ideal customer interview, your audience speaks nothing but the truth. But in this world, many customers adjust their opinions and say what they think you want to hear. This creates a disconnect - you build your campaigns based on an inaccurate understanding of your customers.

Ashley Faus, Head of Lifecycle Marketing at Atlassian, sums it up perfectly:

"Sometimes it's actually harder to talk to your customers because they think they know what they want or they tell you what they think you want to hear. AI doesn't do that. If you just tell AI you're a CIO or you're a developer or you're a marketer, it's gonna look across the entirety of the internet."

That's where an ICP GPT comes in. Because you've fed it customer interviews, data, and more, it can accurately represent your ICP without the potential for human error and bias.

How to Build a Custom GPT

Gear turning

You can create a Custom GPT in minutes - all inside ChatGPT.

  1. Go to https://chatgpt.com/ → click Explore GPTsCreate.
  2. You’ll see the GPT Editor interface with a chat-style setup on the right and configuration options on the left.
    1. Name & Description: How your GPT appears in ChatGPT.
    2. Instructions: The most important section — describe what it should know and how it should act.
    3. Conversation Starters: Example questions to guide users.
    4. Knowledge Files: Upload reference materials (brand guidelines, campaign examples, or tone docs).
  3. Test your GPT and make small edits until it feels like your ICP.

How to Build an ICP GPT

Learn how you can build your own ICP GPT in under an hour.

Then, copy these instructions, customize them, and paste them into your custom GPT

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