Claude or ChatGPT? What Each One Is Actually Better At

You have both open in two tabs, you are paying for at least one of them, and you still could not say which one should be doing the job in front of you right now.

If that is you, you are not the only one. Over a hundred of you wrote back when I asked what frustrates you most about AI, and thank you for that. The answers kept circling the same thing, in almost the same words. It works, then it does not, and you cannot tell why.

So here is the straight comparison. Then the part almost nobody writes: what actually changes after you choose, and what does not.

The short answer, by job.

People who pay for both and switch the moment one annoys them tend to report the same split.

Claude is stronger when the work is words and documents. Long text, careful editing, following an instruction exactly as you wrote it, reading a forty page report and still answering questions about page thirty without losing the thread.

ChatGPT is stronger when the work is wider than words. Pictures, voice, browsing, and the sheer number of things attached to it. If your Tuesday involves making an image, talking to your phone in the car, and drafting a note, it is the one app that covers all three without you leaving it.

Price is no longer the tiebreaker. Both sit at around twenty dollars a month for a single person, so the decision comes down to the shape of your work rather than the size of your budget.

And the most common setup among people who do this for a living is not a choice at all. They keep both and send each job to whichever one is better at it.

What each one is worse at.

A comparison that lists only strengths is an advertisement, so here are the two complaints you will hear most.

People leave Claude over usage limits. On the twenty dollar plan you can hit a ceiling in the middle of a long working session and be told to come back later. If your work arrives in long uninterrupted blocks, that is a real cost, and you should know about it before you move anything important across.

People complain about ChatGPT that it agrees with you. Push back on something it said, even when you are the one who is wrong, and it will often fold and tell you that you make a very good point. If you are using it to test your own thinking, an assistant that caves is worse than no assistant at all.

Neither of those is a reason to rule a tool out. Both are the kind of thing you want to hear before you commit rather than three weeks after.

Switching will not fix the thing that actually annoys you.

This is where the comparison articles stop, and where your real problem starts.

The complaint I hear more than any other is not that the answers are not clever enough. It is this: the same prompt gives a different answer on Tuesday than it gave on Monday. That is the experience that makes the whole skill feel unlearnable, because it makes every good result look like luck.

Move that prompt to the other tool and the problem moves with it. The reason has nothing to do with which company built which model.

Every conversation starts from nothing. Whatever the assistant seemed to know about you, your job, your readers and your standards lived inside the previous conversation, and that conversation is gone. What survives is only what you typed again. And you never type it the same way twice. On Monday you happened to mention the audience and the length. On Tuesday you were in a hurry and mentioned neither.

So the input changed and the output changed with it. It looked like the tool was unreliable. The unreliable part was the brief.

Think of it as briefing a new temp every single morning. Not a bad temp. A very good one, who has never met you, and who has to be told everything from scratch. Tell them a slightly different story each day and you get a slightly different day of work, and none of that is their fault.

Free Claude toolkit. The companion pack for my Claude book is free: the standing brief template, the six part checklist, and more than five hundred numbered prompts you can copy and paste. No card, and you can leave the list in one click. Get the toolkit →

The variable is not the model. It is what you keep outside the chat.

Repeatability comes from one habit. Write your standing brief once, keep it somewhere you can paste from, and start every session from it instead of from memory.

Six things belong in that brief, and they are the six I keep coming back to. Context, so it knows the situation. Role, so it knows who it is being. Objective, so it knows what you actually want at the end. Format, so it knows what shape to hand it back in. Tone, so it knows how to sound. Conditions, so it knows what must be included, what must be left out, and what must stay true.

Four of those six barely change from day to day. That is the part worth saving.

Both tools also give you somewhere to keep this so you stop pasting it at all. In Claude it is called a Project, a workspace that holds your context between conversations. ChatGPT has its own version of the same idea. That deserves its own post and it is the next one in this series.

Before and after.

Before:

Write a post about our new opening hours.

After:

You are writing for our customers, most of them over sixty, reading this on a phone. Write a Facebook post announcing our new opening hours from 1 September. Eighty words at most, warm and plain, no exclamation marks. Say that Saturday hours are unchanged. Do not invite questions in the comments, point people to the phone number instead.

The second one is not cleverer. It is just complete. Run it on Monday and again on Thursday, in either tool, and you get more or less the same post. That is the whole game.

What this will not do.

It will not make either assistant right about things it has no way of knowing. It will not save you from reading what comes back. And it will not turn one of these two tools into the correct answer for everybody, because the honest verdict really is better at what, not better.

What it does remove is the guessing about whether today is a good day or a bad day.

One thing to do before the next post.

Open the last three conversations you had, in either app. Look for the sentences you typed in all three without noticing: who it is for, how long it should be, what it must never say.

Put them in one file. That file is your standing brief, it takes about ten minutes to build, and it is the difference between a tool that works sometimes and a tool that works the same way twice.

If you want the whole system rather than one piece of it, that is what I wrote Claude AI Bible (7 Books in 1) for. Seven books in one volume, from your first brief through projects, skills, connectors and safe automation, with more than five hundred numbered prompts to copy and dated notes so you can see what was true when.

This post is part of my Claude series. The one that started it is Why Claude Gave You a Great Answer on Monday and a Flat One on Tuesday.

Tomasz