
Thursday, February 19, 2026

Got the following question in response to my email yesterday:

As you can see…
He’s asking if my AI runs on ChatGPT…
Because if so, he’s got a "severe allergy” to it.
I feel that deeply lol
To answer the question directly:
When I say I built my AI software product from scratch, I’m not referring to the underlying model.
I don’t have billions of dollars to train my own LLM.
All of my bots run on Claude models.
Not ChatGPT.
In fact, I loathe using ChatGPT for any type of writing or content creation...
And I've done head-to-head tests to back that up.
The results aren’t even close.
Claude wins every time.
Especially when it comes to voice fidelity and persuasive power.
Yet the underlying model is only part of what makes ESS AI different from a custom GPT.
The bigger differentiator is…
Persistent context.
You see, with a custom GPT (or most AI setups, for that matter)...
Every new conversation starts completely cold.
The AI has no idea who you are, who you're writing to, what your offer is, or what your voice sounds like.
So you're basically re-training it from scratch every single time.
Uploading writing samples…
Describing your audience…
Sharing your sales page or offer URL…
Etc etc.
But ESS AI works differently.
Instead, once you’ve built out your avatar, cloned your voice, and shared your offer…
That context lives inside the system forever...
And gets automatically loaded into every new conversation.
So each time you open a new chat, the AI already knows:
- Who your ideal reader is
- What your voice sounds and feels like
- What you're selling and why it matters
- And what you’ve been working on
Already there before you type a single word.
What’s more:
When you share feedback or edits to any bot outputs…
The Voice Learning Protocol identifies patterns and updates your voice profile accordingly…
So it becomes a living, breathing thing…
That evolves as your own thoughts, feelings, and perspective do…
Instead of a carbon copy constrained by old writing samples gone stale.
This is how the AI can sound more like you with each conversation.
In other words:
This ain’t a Custom GPT with a sticky note on it.
It’s a purpose-built system that works just like a highly-paid ghostwriter.
Anyway, if you've got a severe allergy to ChatGPT's writing style…
And the mere thought of using it to write emails makes you break out in hives…
You're gonna feel a lot better over here 😜
Tap below to try it for $1:
→ Try EmailStoryselling.ai for just $1
Jim Hamilton
P.S:
We’re sunsetting the Unlimited Plan in a few weeks time.
And once we do…
If you want access to all the current bots we’ve got, along with all future ones we release, you’ll need to pay $297/month.
Meanwhile, everyone on the Unlimited Plan will be grandfathered in at just $97/month.
So I recommend you check it out before the deadline on March 2 :)

Learn how to build a profitable daily newsletter with Email Storyselling. Read by 4,000+ subscribers.