Kieran’s Substack - The AI Marketing Generalist

Kieran’s Substack - The AI Marketing Generalist

How to Create AI “subject-matter experts”

Built your own dream team to help you ship more, create more.

Kieran Flanagan's avatar
Kieran Flanagan
Jun 19, 2025
∙ Paid

Here’s one of my favourite use cases for CustomGTPs - creating your very own dream team to help you ship more, create more.

In this tutorial for my paid Substack subscribers, I’m going to show you how to build a subject matter expert to help you do work with a couple of prompts.

As always for those who prefer the video, I’ve included that after this quick introduction.

What is a subject matter expert and why build one?

  • They are plug-and-play specialists. You can quickly build a Marketing Strategist, a Conversion Rate Optimisation (CRO) specialist, or a Paid marketing expert the moment the need pops up.

  • Consistent thinking: Once setup, your subject matter expert will consistently build more context on your problems. No having to keep resetting the context. Get straight into solving problems.

  • Catch blind spots early. What I love these for is it’s a non-biased way to catch blind spots. Have an AI assistant trained on principles from elite thinkers to be a thought partner.

  • Is infinitely scalable. If you need multiple perspectives on the same problem, opportunity, tactic, you can duplicate profiles, tweak them and combine conversations to get your own advisory board.

The give you an army of critical thinkers who you can dive in and start talking to without having to continually re-craft prompts.

Here’s the video walkthrough.

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