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The AI Subscription I Never Needed to Buy

I run the same three free AI tools every day. The upgrade button has been sitting there for a year. I still have not clicked it.

David (Jangwon) YunDavid (Jangwon) YunJuly 16, 20265 min read
The AI Subscription I Never Needed to Buy

A Free AI Stack

I run the same three free AI tools every day. The upgrade button has been sitting there for a year. I still have not clicked it.

Zero dollars a month. That is what my entire AI stack costs me, and somehow it still gets everything done: market research for a surgical device startup, user interview synthesis for a job platform, even the writing behind this piece. I have three tabs open right now, ChatGPT, Gemini, and Claude, and not one of them has ever asked me for a credit card.

The stack

I use three tools every day and I rotate them the way some people rotate running shoes. ChatGPT free is where the day starts, quick questions, half formed ideas, the kind of back and forth that does not deserve a real document yet. Gemini free takes over once I need something checked against a live source or pulled out of whatever is sitting in my Google Docs from a group project. Claude free gets the heaviest lifting, structuring a go to market strategy, turning raw interview notes into a journey map, drafting something that needs to read like a finished thought instead of a first pass.

None of the three are the strongest version of themselves. All of them are missing something the paid tier would hand me. I made peace with that trade a while ago.

What zero dollars actually buys

Here is the honest inventory of what a free stack gets you, as long as you use it with any intention at all.

  • Research synthesis. I once pulled together survey data from over a hundred surgeons for a medtech client using nothing but free tools and a lot of careful prompting. The output held up in front of the client.
  • Journey mapping. Twenty plus user interviews for a job search platform, turned into a friction map that pointed straight at the real problem, done entirely on tools that cost nothing.
  • Everyday writing. Emails, slide outlines, the first draft of essays like this one. Free tools handle all of it without complaint.
  • A second opinion. Sometimes I just need something to argue with before I say an idea out loud to an actual person. Free tools are patient enough for that job.

What is actually missing is mostly convenience. Longer memory across sessions, faster answers when the queue is busy, a handful of features I have read about but never touched. None of it has stopped me from finishing a single deliverable.

The habit nobody talks about

Back when I was an undergraduate researcher in a wireless communication lab, a PhD student sat two seats away from me. More than once we were handed the same kind of task, the same free tool, the same rough deadline. What came out of his side of the room and what came out of mine were nowhere near the same quality. Not because his tool was better. It was the exact same one. The difference lived entirely in how he asked.

That has stuck with me longer than any product comparison I have read. The gap between a mediocre AI output and a genuinely useful one rarely comes down to which tier you are paying for. It comes down to whether you know how to give the tool context, constraints, and a clear sense of what good actually looks like. That is a skill, and it does not come bundled with a subscription.

Why the upgrade button stays unclicked

I will admit there is a small pull toward paying, mostly out of curiosity about whatever the newest model can do. I have sat next to classmates describing features I do not have access to and felt a flicker of something close to missing out. But when I actually sit down and list what I would use those features for, the list is short, and most of it already overlaps with things I get done another way.

What actually gets to me is something else. I have watched people pay for the top tier and then use it for exactly the kind of task the free version handles fine, a quick summary, a simple rewrite, nothing that ever needed the extra horsepower. Everyone gets to spend their own money however they want, and I mean that sincerely. But watching it happen still makes me a little sad, because it usually is not really about the money. It is a shortcut around learning how to use the tool well, and the shortcut tends to cost more in the end than the skill would have.

So, would I go paid?

Maybe eventually. If I start running heavier automations, or need something sitting inside my calendar and inbox the way Harsh described in his piece, the math could change. I am not against paying for software. I am against paying for something I have not yet proven I need.

For now, the three free tools on my laptop do the same work his twenty dollars buys him, just with a little more patience on my end. And if the trade is my time or my money? My family has spent years importing tea that needs real time to steep properly. Patience is sort of the family business. I can spare a little more of it here too.

Written by

David (Jangwon) Yun

User-focused product thinker with an engineering foundation, translating customer insights and market data into scalable product strategies.