How Claude Helped Me Break a Subscriber Plateau. 4 Rules That Made It Work.
Most people ask AI the wrong questions and wonder why nothing changes. Here's how to use it as a genuine growth tool.
Can AI actually help you grow your Substack?
In January of this year, I got stuck — my subscriber count wasn't moving. And after a while, I even started losing subscribers. What finally helped me break through that plateau and gain about 900 new subscribers in 2 month was Claude.
I wrote about this in an article “How I used Claude To Grow My Substack By 200 Subscribers In One Day” that sparked a lot of comments and questions about exactly how I worked with Claude to get those results — because many of you had already tried Claude or ChatGPT for the same thing and weren't seeing the growth you hoped for.
The thing is that Claude can only help you grow your newsletter if you know how to work with it.
That’s what this article is about — the four rules that actually make AI useful as a Substack growth tool, and whether it can replace a human expert.
This Is For You If:
You’re new to Substack and want to build the right growth habits from the start
You’ve hit a plateau and can’t figure out what’s holding you back
You’re already using AI but getting generic, unhelpful advice
You want a personalized growth strategy — not a one-size-fits-all plan
Does Claude (or ChatGPT) Even Know How Substack Works?
First, a question I get asked a lot: does Claude even know how Substack works?
It does. Claude (ChatGPT or Perplexity) has general knowledge of both the platform and how to grow on it.
That said, when Claude helped me break through my plateau, I wasn’t just asking general questions.
I spent 15+ years in social research, and I leaned on those skills to build something more deliberate — a personal Claude assistant specifically for Substack growth. I collected my own data month by month, used a Claude Project as the foundation, and analyzed everything systematically. That’s what made the difference.
Here are five rules that will help you get genuinely useful Substack growth advice from whichever AI tool you prefer.
Rule 1: Give Claude (Or Any AI) Your Actual Data, Not Just Your Questions
This is the single most important shift you can make.
If you ask AI the right questions but without specific data from your account, it will give you fairly surface-level recommendations.
Real, actionable help only comes when you build a personalized assistant — one that’s working from your actual numbers, not generic Substack patterns.
This matters more depending on where you are in your growth journey.
If you’re just starting out — a few weeks or months in — general AI advice can still be useful.
I tested this myself. I asked Claude the question most new creators probably lead with: “What is Substack and how do I grow there?” It covered the basics well enough for a beginner.
But its top suggestion was to bring your audience over from other platforms. But not everyone has an audience elsewhere. And anyone who’s been at this for a while knows that importing subscribers doesn’t automatically mean engaged readers.
If you’re past 100 subscribers and hitting a slowdown or plateau, general questions won’t get you there. At that stage you need to track your metrics, analyze your specific patterns, and ask questions grounded in what’s actually happening in your account.
That’s when AI advice starts translating into real subscriber growth — both free and paid.
Rule 2: Collect Data Carefully — AI Extraction Makes Mistakes
This is the practical rule most people skip over, and it causes the most problems.
The free version of Claude can’t scrape websites, so you’ll need to collect data manually. If you’re on a paid plan, Claude for Chrome can pull information from web pages — but it makes mistakes more often than you’d want, especially with larger datasets.
Breaking the extraction into smaller, staged steps helps significantly. And some requests it simply can’t handle at all.
Perplexity Comet can also pull data from your Substack account automatically, but it has its own limitations.
Blind trust in automated extraction will cost you. If the data going in is wrong, the strategy coming out will be wrong too. Manual checks and staged collection are worth the extra time — especially when you’re building a growth strategy on top of that data.
If you want to stop guessing and build a growth strategy around your actual Substack data,
The Substack Note Engine Playbook gives you the full system — step-by-step instruction how to collect data manually and with Claude, a pack of prompts for Substack Notes analysis (the main growth engine on Substack), and a structure that keeps errors out and makes the advice you get actually reliable.
Everything I used to go from a prolonged plateau to +900 new subscribers in 2 months.
→ Get the playbook here:
Rule 3: Iterate Your prompts — The First Answer Is Rarely The Best One
Most people ask one question, get a mediocre answer, and conclude that AI isn’t useful for Substack growth. The real problem is that they stopped too early.
Here’s what that iteration actually looks like in practice.
I started with:
“What is Substack and how do I grow there?”
— useful for context, but the advice was generic and kept circling back to bringing an audience from other platforms.
I tightened it:
“I have no external audience. How do I build one directly on Substack? Give me step-by-step instructions for the first week.”
— better, but Claude still pushed the social media angle, and each point was described so briefly that a beginner would have no idea how to actually implement it.
Third attempt:
“I don’t want to ask friends, and I have no audience on any other platform. Give me a step-by-step plan for growing exclusively on Substack.”
That’s when I finally got something genuinely useful — a framework I could recommend to any beginner, with only minor caveats.
The lesson: don’t treat the first response as the answer. Treat it as the start of a conversation.
Rule 4: Cross-Check Across Tools — Claude, ChatGPT, And Perplexity Overlap But Don’t Duplicate
About two-thirds of the time, they’ll tell you the same things. But that remaining third is where the interesting differences live — and it’s worth paying attention to.
When I asked about growing on Substack, Claude gave me the strongest overall plan, in my view. But ChatGPT and Perplexity mentioned one specific tactic Claude left out — one I found compelling enough that I’m planning to test it.
If you have the bandwidth, run the same question across multiple tools. You won’t always find something new, but when you do, it can be the piece that makes the whole strategy click.
That’s actually what happened to me. When I asked about growing on Substack, Claude gave me the strongest overall plan — better than what ChatGPT or Perplexity produced, in my opinion.
But those two mentioned one specific tactic Claude left out, and it was good enough that I’m planning to test it.
One Last Thing
AI won’t grow your Substack on its own.
And it won’t replace an experienced Substack growth expert who has worked across dozens of newsletters, spotted patterns you’d never see in your own data, and built intuition that no prompt can replicate. That kind of expertise is real and worth paying for if you can access it.
But for many creators — especially those without a budget for a consultant — AI used the right way can be a genuinely powerful second-best.
One that’s available at any hour, works from your actual data, and gets more useful the more you invest in building it out. Not a replacement for human expertise, but a capable assistant that can carry a lot of the strategic weight.
The four rules above are exactly what I wish I’d known when I first started asking Claude for help. Not because the tool is difficult, but because most people never get past the first generic answer — and then conclude that AI just doesn’t work for newsletter growth.
It does. You just have to know how to work with it.
Dear Substackers, have you tried using Claude or ChatGPT for your Substack growth and did it actually help? Drop your experience in the comments — where you got stuck, what surprised you, or what's just not working. Let's figure it out together.
Thanks for this I have an in depth help and analyse ‘prompt’ in Claude. I no longer pay for chatGPT and perplexity I’ve never even heard of. Thanks for the information.
I do have one question .::. How do you format your newsletter ? How often and I take it you write it differently from your posts?
Will consider your offer. I don’t work though so depends on the cost.
Ofc!! We’re in 2026 💙