ChatGPT or Claude: which should you use?
Short answer: you do not have to pick. Most people who use AI seriously end up with both open and switch depending on the job. Here is how I decide which one to reach for, and what actually differs between them day to day.
Almost every comparison you will read online is written by someone with a referral link. This one is not. I use both, I pay for both, and each one is clearly better at some things and clearly worse at others.
The quick version
Reach for ChatGPT when
- You want a fast answer or a short piece of writing: an email, a caption, a reply.
- You are brainstorming and want lots of options quickly.
- You need an image made, or you want to talk out loud instead of typing.
- You want a repeatable mini-tool you can come back to, built once and reused.
- You are working on your phone between other things.
Reach for Claude when
- The document is long: a report, a grant application, a policy, a set of meeting notes.
- The writing has to be careful, structured and client-facing.
- You want it to follow your brief closely rather than embellish it.
- You are pasting in a lot of messy material and need it untangled.
- You want fewer surprises and a steadier tone.
Where they actually differ
Length and messiness
This is the biggest practical gap. If you paste six pages of raw notes into ChatGPT, it will often summarise the first part well and quietly lose the thread on the rest. Claude tends to hold the whole thing at once. For anyone doing grant applications, board papers, policies or long client documents, that difference alone is worth having Claude available.
Default tone
Out of the box, ChatGPT writes punchier and more casual, with more enthusiasm than most Australian businesses actually want. Claude writes flatter and more measured. Neither default is right. Both will match your voice if you tell them to, and there is a guide on exactly how to do that.
Following instructions
If you say "under 150 characters, no emoji, no hashtags," Claude is more likely to actually do all three. ChatGPT is more likely to give you something better than you asked for but not what you asked for. Whether that is a feature or a problem depends entirely on whether you knew what you wanted.
Everything around the model
ChatGPT has the stronger set of extras: image generation, voice, a bigger app ecosystem, and custom mini-assistants you can build once and reuse. If those matter to your work, that is a real reason to lean ChatGPT.
| The job | What I open | Why |
|---|---|---|
| Instagram captions | ChatGPT | Faster, more options, punchier by default. |
| Grant application | Claude | Holds long source material and writes carefully. |
| Reply to an annoying email | Either | Both are fine. Whichever is already open. |
| Turning 40 pages of notes into an SOP | Claude | Does not lose the middle. |
| Product images or social graphics | ChatGPT | Claude does not generate images. |
| Board report from raw program notes | Claude | Structure and restraint. |
| Thinking out loud on a walk | ChatGPT | Voice mode. |
What about cost?
Both run a free tier that is genuinely enough to learn on, and both charge roughly the same for a paid personal plan, quoted in US dollars. Two things Australians should know. First, add roughly half again when you convert to Australian dollars, and check whether GST is applied at checkout. Second, if you are a registered non-profit, you may not need to pay full price for either. See the guide on AI discounts for Australian non-profits.
The mistake almost everyone makes. They try one tool, get a mediocre answer, and conclude AI is overhated or overhyped. Nine times out of ten the tool was not the problem. The prompt was three words long with no context.
Before you decide either one is not for you, give it who you are, what you want, and what a good answer looks like. That single change fixes most bad results.
If you only do one thing
Open both. Give them the same real task from your actual week, not a test question. Whichever one you instinctively go back to tomorrow is the one you should pay for first.