Article at a glance
This article cuts through the marketing hype to explain what ChatGPT, Microsoft Copilot, and Google Gemini actually do in everyday terms. You will learn how each tool differs in terms of who built it, what it connects to, and where it fits into your existing workflow. By the end, you will have a clear sense of which AI assistant is worth your time and money.
Introduction
Three tools. Constant confusion. Here’s a plain-English breakdown of what ChatGPT, Copilot, and Gemini actually do — and which one deserves a spot in your week.
You’ve probably heard all three names by now. Maybe you’ve tried one, bounced off it, and quietly gone back to Googling things. That’s fair. The marketing around these tools is almost deliberately unhelpful, full of vague promises and zero specifics about what you’d actually use them for on a Tuesday morning.
So here’s the short version: ChatGPT, Copilot, and Gemini are all AI assistants you can talk to in plain English. You type something, they respond. The differences come down to who built them, what they’re connected to, and where they slot into your existing setup.
ChatGPT is made by OpenAI and is probably the one most Australians have heard of first. It’s a general-purpose tool — good at drafting, summarising, explaining, and working through problems with you. The free version runs on GPT-4o mini; the paid plan (ChatGPT Plus, around AU$28 a month) gets you the full GPT-4o model and access to things like image generation and file uploads.
Microsoft Copilot is built on OpenAI’s technology but lives inside Microsoft’s products. If your workplace runs Microsoft 365, Copilot is the version you’ll encounter inside Word, Excel, Outlook, and Teams. There’s a free web version at copilot.microsoft.com, and a paid tier woven into Microsoft 365 subscriptions.
Gemini is Google’s offering. It connects directly to Google’s ecosystem, which means it can pull from Gmail, Google Docs, and Google Drive if you give it access. The free tier is genuinely capable; Gemini Advanced (part of Google One AI Premium, around AU$35 a month) gets you the more powerful model.
None of these is the obvious winner for every task. The right call depends on what you’re already using and what you’re trying to get done.
Why this matters for Australian readers
Most Australians who’ve tried one of these tools have done so by accident — a colleague pasted something into ChatGPT, or Microsoft 365 suddenly had a Copilot button in the toolbar. That’s a reasonable way to start. But it’s a poor way to decide which tool to actually build a habit around.
The practical reality is that ChatGPT, Copilot, and Gemini are not interchangeable. They’re built by different companies, trained on different data, connected to different software, and priced differently for Australian users. Picking the wrong one for your situation doesn’t ruin anything, but it does mean you’re probably doing more manual work than you need to.
Does it matter which one I use if I’m just asking basic questions?
For simple, one-off questions, the differences are small. All 3 tools will answer a question about how to write a formal email, summarise a short document, or explain a concept in plain English. Where the differences show up is in workflow — what the tool connects to, how much you can do without switching tabs, and what you’re paying for.
If you’re using Microsoft 365 at work (Word, Excel, Outlook, Teams), Copilot is wired directly into those apps. That’s a genuine time-saver. If you’re on Google Workspace (Gmail, Docs, Sheets), Gemini sits inside those tools the same way. ChatGPT doesn’t live inside either ecosystem natively, so you’re copying and pasting more often. That friction adds up across a week.
What about cost for Australian users?
ChatGPT’s free tier runs on GPT-4o mini, which handles most everyday tasks fine. The paid plan, ChatGPT Plus, is around A$28–30 per month (pricing can shift with the exchange rate, so check OpenAI’s site directly). Microsoft Copilot has a free version built into Windows 11 and the Edge browser, and a paid Copilot Pro tier at around A$38 per month. For businesses already paying for Microsoft 365, Copilot for Microsoft 365 is a separate enterprise add-on at a significantly higher price per user. Gemini is free at the standard tier, with Gemini Advanced bundled into Google One AI Premium at around A$32 per month.
None of these prices are locked in, and the free tiers change regularly. Worth checking each provider’s Australian pricing page before committing.
Why does this matter for small business owners specifically?
A tradie, a bookkeeper, a small retailer — anyone running their own operation in Australia is probably already paying for either Microsoft 365 or Google Workspace. If that’s you, the AI tool that costs the least extra effort is the one already inside the software you’re using. A bookkeeper on Xero and Google Workspace gets more immediate value from Gemini than from a standalone ChatGPT subscription, because Gemini can draft emails in Gmail, help with Docs, and pull context from your calendar without any copy-paste gymnastics.
That said, ChatGPT has the largest library of third-party integrations and the most active community of people sharing prompts and workflows. If you want to find a ready-made template for your specific industry, there’s a reasonable chance someone’s already built it for ChatGPT.
Is there a privacy consideration for Australian users?
Yes, and it’s worth a moment. All 3 tools send your inputs to overseas servers for processing. If you’re pasting in client data, financial records, or anything covered by the Privacy Act 1988, you should check each provider’s data handling terms before using the free tiers. Microsoft’s enterprise Copilot has stronger data residency commitments than the consumer version. Google and OpenAI both have enterprise tiers with different data handling terms. The free consumer versions of all 3 tools may use your inputs to improve their models unless you opt out — and the opt-out process varies by platform.
For most personal use, this isn’t a crisis. For business use involving client information, it’s worth 10 minutes reading the relevant terms or asking your IT contact.
The short version
The tool that matters most is the one that fits where you already work. If you’re deep in Microsoft’s ecosystem, start with Copilot. Google Workspace user? Try Gemini first. If you’re not tied to either, ChatGPT’s free tier is a reasonable place to have a crack and see what actually saves you time.
Practical options and safety considerations
Three tools, three different jobs. Here’s how to pick the right one without wasting a Tuesday afternoon on the wrong one.
Each of these tools sits on your phone or browser right now, probably free or already bundled into something you’re paying for. The practical question is which one to open when.
What does ChatGPT actually do?
ChatGPT, made by OpenAI, is a general-purpose text tool. You type something, it responds. That covers drafting emails, summarising documents, writing social media posts, answering questions, generating ideas, or helping you think through a problem out loud. The free tier runs on GPT-4o mini; the paid tier (ChatGPT Plus, around AU$28/month) gives you access to GPT-4o, which handles longer, more complex tasks better.
It’s the most capable standalone writing and reasoning tool of the three for open-ended work. If you’re not sure what you need, start here.
What does Microsoft Copilot actually do?
Copilot is ChatGPT’s technology (OpenAI’s models, licensed by Microsoft) built into the tools you already use: Word, Excel, Outlook, Teams. If your business runs on Microsoft 365, Copilot can draft a Word doc from a bullet list, summarise an email thread, or pull data patterns out of a spreadsheet without you writing a formula.
The free web version at copilot.microsoft.com is useful for general chat and image generation. The paid Microsoft 365 Copilot (around AU$65/user/month as of mid-2025, though pricing changes, so check Microsoft’s site directly) is where it earns its keep, because it connects to your actual files and calendar. Without that integration, it’s mostly just a rebranded chat interface.
NOTE If your team isn’t already on Microsoft 365, Copilot’s main advantage disappears. The free version is fine for occasional use, but the real value is the file and app integration.
What does Gemini actually do?
Gemini is Google’s AI tool, and its clearest strength is handling large amounts of text at once. The Gemini 1.5 Pro model, available in the paid Gemini Advanced tier (part of Google One AI Premium, around AU$32/month), accepts up to 1 million tokens in a single prompt. In plain terms: you can paste an entire contract, a long report, or a batch of customer feedback and ask it questions about the whole thing.
If you’re a Google Workspace user (Gmail, Docs, Drive, Meet), Gemini integrates there similarly to how Copilot works in Microsoft 365. For long-document work specifically, Gemini is the practical pick.
Which one should you actually use?
Here’s a rough match:
- Writing, brainstorming, general Q&A: ChatGPT
- Working inside Word, Excel, Outlook: Copilot (with Microsoft 365)
- Summarising long documents or working in Google Workspace: Gemini
Most small businesses will get real mileage from the free tiers before needing to pay for anything. Try the free version of each for a week on actual work tasks before committing to a subscription.
Safety and privacy: what you should know before you paste anything in
All three tools send your input to their respective company’s servers for processing. That’s worth understanding before you paste in a client contract, employee details, or anything commercially sensitive.
ChatGPT’s free tier uses your conversations to train future models by default. You can turn this off in Settings > Data Controls. ChatGPT Plus users have more control, and OpenAI offers a separate enterprise product with stronger data protections.
Microsoft Copilot, when used through a Microsoft 365 commercial subscription, operates under Microsoft’s enterprise data protection commitments, meaning your data isn’t used to train the underlying models. The free consumer version of Copilot has different terms, so read them if that matters to your work.
Gemini’s data handling depends on whether you’re using the consumer product or Google Workspace. Consumer accounts have weaker protections; Workspace accounts with the appropriate admin settings can limit data use for model training.
TRY THIS Before using any of these tools with client or business data, spend 10 minutes in the privacy settings of whichever tool you’re using. Each one has a toggle or setting that limits how your inputs are used. Find it before you need it.
The Australian Privacy Act applies to how Australian businesses handle personal information, but it doesn’t directly regulate what these overseas platforms do with data you send them. If you’re in a regulated industry (health, finance, legal), check with your compliance team before using any of these tools with client data.
Do you need all three?
Probably not. Pick one that matches your existing software stack, use it for a month on real tasks, and see if it earns its place. A 10-minute setup with the right tool beats a month of dabbling across all three.
Product comparison criteria and limitations
Three tools, one honest yardstick. Here’s how we tested them — and where the comparison breaks down.
We looked at ChatGPT, Microsoft Copilot, and Google Gemini across the tasks Australian small business owners and everyday users actually run: drafting emails, summarising documents, answering questions, writing code snippets, and handling image inputs. The goal was practical usefulness at the free and entry-level paid tiers, because that’s where most people start.
A few things to be upfront about before you read any further.
What we compared
The comparison covers the default, consumer-facing versions of each tool as they exist right now:
- ChatGPT (OpenAI) — the free tier running GPT-4o, and the paid ChatGPT Plus at AUD $28/month
- Microsoft Copilot — the free web version built into Edge and available at copilot.microsoft.com, plus the Copilot Pro subscription at AUD $30/month
- Google Gemini — the free tier and Gemini Advanced, which comes bundled with a Google One AI Premium plan at AUD $35.99/month
Pricing was checked against Australian storefronts. Subscription costs can shift, so confirm before you commit.
How we assessed them
Each tool was given the same prompts across the same task categories. Responses were judged on accuracy, usefulness, and how much editing the output needed before it was actually usable. We also looked at how each tool handles Australian spelling, local context (think GST, PAYG, Australian date formats), and whether the free tier is genuinely functional or a thin demo designed to push you toward a subscription.
We did not run controlled A/B testing with statistical significance. This is editorial assessment, not a peer-reviewed study. Take the verdicts as informed opinion, not lab results.
Where the comparison gets complicated
All 3 tools update frequently. OpenAI, Microsoft, and Google each ship model changes without much fanfare, which means a capability gap that existed last month may have closed — or widened — by the time you read this. We’ve tried to focus on structural differences (what each tool is designed to do, what ecosystem it sits inside) rather than benchmark scores that go stale quickly.
The free tiers also behave differently depending on traffic. ChatGPT’s free tier has historically throttled access to GPT-4o during peak periods, falling back to an older model. Gemini’s free tier doesn’t always disclose which underlying model version it’s running. Copilot’s free tier is more consistent but carries Microsoft’s content filters, which can be more conservative than the others on certain topics.
NOTE If you’re comparing these tools for a specific work task, run your own test with a real prompt from your actual workflow. A 10-minute trial beats any review, including this one.
What we didn’t compare
Enterprise versions, API access, and deep integrations (like Copilot inside Microsoft 365 apps, or Gemini inside Google Workspace) are outside scope here. Those products have different pricing, different capabilities, and different procurement processes. If you’re evaluating AI for a team of 20 or more, the consumer comparison below is a starting point, not a buying guide.
We also didn’t assess these tools for sensitive use cases — medical, legal, or financial advice. All 3 tools carry disclaimers about this, and rightly so. A chatbot is a useful drafting assistant; it’s a poor substitute for a GP or an accountant.
The honest limitation
No comparison like this is fully objective. Prompt wording affects outputs. The reviewer’s judgment affects ratings. And all 3 companies are actively trying to improve their products, which means today’s winner on a given task might be tomorrow’s runner-up.
What we can offer is a consistent framework, real prompts, and calls that are specific enough to be useful — even if you end up disagreeing with some of them.
Our top picks
Three tools, one honest breakdown. Here’s who should use what — and why the answer isn’t the same for everyone.
Pick the wrong tool and you’ll spend more time wrestling with it than the task deserves. Pick the right one and it disappears into your workflow. Here’s the call on each.
ChatGPT
Best for: Writers, solo operators, and anyone who needs a general-purpose thinking partner.
ChatGPT (made by OpenAI) is the one most Australians have already tried, and for good reason. It’s genuinely good at drafting, editing, brainstorming, and working through a problem in plain conversation. The free tier runs on GPT-4o mini; the paid plan (ChatGPT Plus, around AU$28/month at time of writing) gets you GPT-4o, which handles longer, more complex tasks without losing the thread.
Concrete strengths:
- Writing and editing. Give it a rough draft and ask it to tighten the language, shift the tone, or restructure the argument. It does this well.
- Custom instructions. You can tell it your role, your audience, and your preferences once — and it carries that context across conversations. Useful if you’re a bookkeeper who doesn’t want to re-explain your business every session.
Honest limitation: ChatGPT’s web browsing is available but inconsistent. If you need real-time information — today’s exchange rate, a news story from this morning — it can miss or hallucinate details. Verify anything time-sensitive before you use it.
Microsoft Copilot
Best for: Small business owners and employees already inside the Microsoft 365 ecosystem.
Copilot is built into Word, Excel, Outlook, and Teams. If your business runs on Microsoft 365, Copilot is the most practical option because it works where your files already live. Ask it to summarise a long email thread, draft a reply, or pull figures from a spreadsheet and turn them into a slide — it does all of that without you copying and pasting between apps.
Concrete strengths:
- Document-native. It reads your actual Word doc or Excel file, not a pasted excerpt. That matters when you’re working with a 40-page contract or a messy data export.
- Outlook integration. Summarising a long email chain or drafting a professional reply takes about 10 seconds. For anyone who lives in their inbox, this alone earns its keep.
Honest limitation: The full Copilot experience requires a Microsoft 365 Copilot licence, which is priced for business plans and adds meaningful cost per user per month. The free version of Copilot (available at copilot.microsoft.com) is capable but doesn’t have the deep Office integration. Worth knowing before you assume it’s included in your existing subscription.
Google Gemini
Best for: Anyone who lives in Google Workspace — Gmail, Docs, Drive, Meet — and researchers who work with long documents.
Gemini is Google’s model, and its clearest advantage is context length. It can read and reason across very long documents in one go, which makes it genuinely useful for legal documents, research papers, or lengthy reports. The Gemini app (free tier) is solid; Gemini Advanced (part of Google One AI Premium, around AU$35/month) gets you the more capable model and Workspace integration.
Concrete strengths:
- Long document handling. Upload a 100-page PDF and ask it to pull the three most relevant clauses for your situation. It handles this better than the other two at comparable price points.
- Google Workspace integration. Summarise a Gmail thread, draft a Doc, or pull information from your Drive files without leaving the Google environment.
Honest limitation: Gemini’s conversational writing feels slightly more formal and less flexible than ChatGPT’s. For creative work or anything that needs a particular voice, it takes more prompting to get there.
TRY THIS If you’re already paying for Microsoft 365 or Google Workspace, check whether Copilot or Gemini is already available on your plan before signing up for a separate tool.
The short version: use ChatGPT if you want a flexible all-rounder; use Copilot if your work lives in Microsoft 365; use Gemini if you’re in Google’s world or regularly working with long documents.
Frequently asked questions
What’s the actual difference between ChatGPT, Copilot, and Gemini?
ChatGPT is OpenAI’s standalone tool, built for open-ended conversation, writing, analysis, and coding. Gemini is Google’s equivalent, and it sits inside Google’s ecosystem, which means it connects naturally to Search, Docs, and Gmail. Copilot is Microsoft’s AI layer, powered largely by OpenAI’s models, and it lives inside Windows, Edge, and Microsoft 365. The underlying technology overlaps more than the marketing suggests. Where they differ is where they live and what they plug into.
Which one should I use if I’m already paying for Microsoft 365?
Copilot. If your business runs on Word, Excel, Outlook, and Teams, Copilot is already partly baked into those apps (depending on your subscription tier). You can draft emails in Outlook, summarise meeting transcripts in Teams, or generate a first-pass report in Word without switching tabs. The free version in Edge and Windows is more limited, but still useful for quick research and drafting. Check your Microsoft 365 plan first before paying for anything extra.
Is ChatGPT free, and what do you actually get if you pay?
The free tier gives you access to GPT-4o with some usage limits. ChatGPT Plus costs USD $20 a month (roughly AUD $30, though this fluctuates with the exchange rate) and removes most of those limits, adds faster responses, and unlocks features like Advanced Data Analysis, image generation via DALL-E, and access to newer model versions sooner. For most casual users, the free tier is genuinely fine. If you’re using it daily for work, the paid tier is worth the cost.
Can Gemini actually read my Google Docs and emails?
Yes, if you’re using Gemini Advanced with a Google One AI Premium subscription. That plan connects Gemini to your Gmail, Docs, Drive, and Calendar. So you can ask it to summarise a long email thread, pull key dates from your calendar, or draft a reply based on a document you’ve shared. The free version of Gemini doesn’t have this deep integration. The AI Premium plan costs around AUD $35 a month at the time of writing, though Google has adjusted pricing before.
Are these tools storing my conversations? Should I be worried about privacy?
All three collect conversation data by default, and all three let you turn that off. In ChatGPT, you can disable chat history in Settings, which also stops your chats being used for training. Microsoft and Google have similar controls. If you’re pasting in sensitive client information, business financials, or anything confidential, read the privacy settings before you start. For Australian businesses handling personal information under the Privacy Act, it’s worth checking whether your data is being processed on overseas servers, because it almost certainly is.
Which one is better for long documents?
Gemini, generally. Google has pushed hard on context window size, and Gemini 1.5 Pro can handle very long documents in a single session. If you need to paste in a 50-page contract, a lengthy research report, or a full transcript and ask questions about it, Gemini handles that more reliably than the standard ChatGPT free tier. ChatGPT Plus with GPT-4o has a large context window too, so the gap has narrowed. For most everyday documents, any of the three will do the job.
Do I need to know how to code to use any of these?
No. All three are designed for plain-English conversation. You type a question or a request, they respond. Coding knowledge helps if you want to use them for programming tasks, but for writing, summarising, researching, or answering questions, you just type normally. The main skill worth building is prompt clarity: the more specific your request, the more useful the output. “Write me a professional email declining a meeting” will get you further than “write an email.”
Can I use these tools for my small business in Australia, or are they mainly built for the US market?
You can use them, and plenty of Australian small businesses already do. The tools work in Australian English if you ask them to, and they understand local context reasonably well. That said, they’re trained on global data, so they’ll occasionally get Australian-specific details wrong: tax rates, legal requirements, industry terminology. Treat the output as a capable first draft, not a final answer. For anything touching GST, Fair Work obligations, or Australian consumer law, check with an accountant or lawyer before acting on what the AI tells you.
Summary and next steps
Three tools, one clear decision. Here’s how to walk away from this with an actual plan.
You’ve now got a working picture of what each tool does. So here’s the short version before you close the tab.
ChatGPT is the general-purpose workhorse. Writing, brainstorming, drafting emails, talking through a problem. If you’re new to AI tools, start here. The free tier is usable; GPT-4o on the paid plan (around $28/month in Australia) is noticeably better for anything complex.
Microsoft Copilot is the one to reach for if you’re already living in Word, Excel, or Outlook. It sits inside the tools you’re already paying for. If your business runs on Microsoft 365, it’s worth checking whether your plan includes Copilot access before signing up for anything else.
Gemini is Google’s entry. It connects naturally to Gmail, Google Docs, and Google Drive, and it handles long documents well. If your workflow is Google-first, it fits without friction.
TRY THIS Pick the one tool that matches where you already do most of your work, and spend 20 minutes with it today on a real task, not a test prompt. Draft an actual email. Summarise a document you’ve been putting off. That’s how you find out whether it earns a place in your week.
The honest call: most Australians will get the most out of ChatGPT to start, then layer in Copilot or Gemini once they know what they actually want from an AI tool. Get one working before you collect three.