ChatGPT vs Copilot: Full Comparison
ChatGPT vs Copilot: neither wins outright. ChatGPT is the stronger all-round AI assistant for writing, research, coding and creative work, while Copilot is the better pick inside Microsoft 365, because it works in Word, Outlook, Excel and Teams with your own work data. If you live in Microsoft 365, Copilot wins; otherwise ChatGPT is the more capable choice.
ChatGPT vs Copilot: which AI assistant should you use in 2026?
If you are comparing ChatGPT vs Copilot, you are probably trying to work out which AI assistant deserves your money, or your company's. The honest answer is that they are built for different jobs, and the best choice depends on where your work actually happens.
ChatGPT is OpenAI's standalone AI assistant. It is a general-purpose tool for writing, research, coding, image creation and file analysis, and it runs on the latest GPT models. Copilot is Microsoft's AI assistant, woven into Word, Excel, PowerPoint, Outlook and Teams, and with the right licence it can read your work files, emails and meeting notes.
This guide compares the two in plain English: what each does best, how the Microsoft 365 integration works, what they really cost, and a clear verdict at the end so you can pick with confidence.
ChatGPT vs Copilot at a glance
Here is the short version before we go deeper. The table below compares the two assistants on the things most people care about.
What each AI assistant does best
What ChatGPT does best
ChatGPT's strength is depth. As a standalone assistant, it is the better tool for:
Long-form writing and editing, from essays and reports to marketing copy
Research and analysis, including deep research mode and web search
Coding, with Codex access and a developer mode on paid plans
Image creation and analysing files you upload
Custom GPTs, projects, scheduled tasks and a large app ecosystem
What Copilot does best
Copilot's strength is context. It is the better tool when:
You want AI inside Word, Excel, PowerPoint, Outlook and Teams rather than in a separate tab
You need it to summarise emails, long threads and meetings in Teams
You want answers grounded in your company's files under your existing permissions
Your IT team needs enterprise data protection, admin controls and compliance reporting
Microsoft 365 integration: Copilot's home advantage
This is where the two products genuinely diverge. Copilot is built into the Microsoft 365 apps that millions of people already use. With a paid licence it can draft a proposal in Word from your meeting notes, summarise a long email thread in Outlook, analyse a spreadsheet in Excel and recap a Teams meeting you missed, all grounded in the files and data you already have permission to see.
ChatGPT can connect to Office files too, but differently. Paid ChatGPT plans include extensions for Word, Excel and PowerPoint that bring its models into those apps, and you can upload any file into a chat for analysis. What ChatGPT cannot do is read your Outlook mailbox, your Teams history or your company's SharePoint. There is no equivalent to Copilot's work-data grounding.
One warning worth knowing if you manage a Microsoft 365 tenant: Copilot does not create access, it reveals access that already exists. A loosely permissioned SharePoint site becomes far more discoverable when an AI can summarise it on demand. Microsoft's own guidance is to clean up permissions before switching Copilot on, not after.
Pricing: bundled Copilot vs standalone ChatGPT
ChatGPT pricing
Free: unlimited text chats with GPT-6 Luna, with limits on uploads, images, voice and deep research
ChatGPT Go: a cheaper ad-supported step between Free and Plus, where available in your region
ChatGPT Plus: $20 per month, with the full GPT-6 and GPT-5.6 model line-up, higher limits, projects and scheduled tasks
ChatGPT Pro: from $100 per month for power users, with higher tiers for maximum usage
Copilot pricing
Copilot Chat: free with a qualifying Microsoft 365 work account, web-grounded chat with enterprise data protection
Microsoft 365 Copilot Business: from £13.80 per user/month paid yearly (first-year promotional price until 31 December 2026, normally £16.10), on top of an existing Microsoft 365 licence
Bundled plans: Microsoft 365 Business Standard with Copilot at £18.10 and Business Premium with Copilot at £24.60 per user/month paid yearly
Consumer Copilot: free on the web and in the Copilot app, with Copilot features included in Microsoft 365 Personal and Family subscriptions
The pricing models are fundamentally different. ChatGPT is a standalone subscription you can buy and cancel on your own. Copilot for work is an add-on that assumes you already pay for Microsoft 365, so the true cost is the Copilot licence plus the base subscription. If your company already licenses Microsoft 365, the incremental cost is smaller than it looks. If you are an individual, ChatGPT Plus or the free consumer Copilot will cost you far less.
Accuracy, models and what is under the hood
Here is a detail that surprises many people: both assistants run on OpenAI models. Microsoft lists the latest OpenAI models at the heart of Microsoft 365 Copilot, and GPT-5.6 became its preferred model in July 2026. ChatGPT, naturally, gets OpenAI's newest models first, including the GPT-6 family that Copilot does not yet use.
In practice both are capable of strong reasoning and natural conversation. ChatGPT tends to deliver more raw capability on complex reasoning, long coding tasks and creative work, because it receives OpenAI's newest models first and is tuned as a general assistant. Copilot's answers tend to be more useful at work because they are grounded in your own files and data, even when the underlying model is a step behind. Do not confuse Microsoft's Copilot with GitHub Copilot either: that is Microsoft's AI coding assistant for developers, a separate product with its own pricing.
Which should you choose?
Choose ChatGPT if...
You want the best all-round assistant for writing, research or coding
You do not live in Microsoft 365, or you use Google Workspace, Apple or LibreOffice
You create images or need deep research mode
You are an individual and want one subscription that covers everything
Choose Copilot if...
Your working day happens in Outlook, Teams, Word and Excel
You want AI that reads your work context: files, emails and meetings
You need enterprise data protection and admin controls
Your company already licenses Microsoft 365 for everyone
How do they compare with other AI assistants?
ChatGPT and Copilot are not the only serious options. Anthropic's Claude is widely regarded as one of the strongest AI models for writing and coding, and Google's Gemini is the natural choice if you live in Google Workspace rather than Microsoft 365. We cover both in detail: read our ChatGPT vs Claude comparison and our ChatGPT vs Gemini guide. If you want a complete introduction to ChatGPT itself before diving into comparisons, read our complete guide to what ChatGPT is.
Frequently asked questions
Is ChatGPT better than Copilot?
For pure capability, yes: ChatGPT is the stronger all-round assistant, with newer models, better writing and research, and far more features. Copilot is better at one specific thing, working inside Microsoft 365 with your own data. If that one thing is your daily reality, Copilot is the better tool for you.
Can I use ChatGPT inside Microsoft Office?
Yes, with limits. Paid ChatGPT plans include extensions for Word, Excel and PowerPoint that bring ChatGPT's models into those apps. ChatGPT cannot read your Outlook mailbox or Teams history, which is Copilot's territory.
Is Microsoft Copilot free?
Partly. Anyone can use the consumer Copilot for free on the web and in the Copilot app, and Microsoft 365 Copilot Chat is free with a qualifying work account. But Copilot inside Word, Excel, PowerPoint, Outlook and Teams, grounded in your work data, needs a paid Microsoft 365 Copilot licence.
Does Copilot use ChatGPT's models?
Copilot runs on OpenAI's models, including GPT-5.6 as the preferred model in Microsoft 365 Copilot since July 2026. But Copilot is Microsoft's product, wrapped around your work data with its own interface, features and limits. It is not simply ChatGPT with a Microsoft logo.
Which is cheaper, ChatGPT or Copilot?
For individuals, ChatGPT Plus costs $20 per month, and the free consumer Copilot costs nothing. For businesses, Microsoft 365 Copilot Business is an add-on from £13.80 per user per month on top of an existing Microsoft 365 licence, so the total depends on what you already pay for.
Can Copilot write a full document like ChatGPT?
Yes. Copilot in Word can draft, rewrite and summarise documents, and it can pull in content from files you have access to. For long-form creative or technical writing from scratch, ChatGPT usually produces the stronger first draft, which you can then refine in Word.
The bottom line
ChatGPT vs Copilot is not really a fight between two rival AIs. It is a choice between a general-purpose assistant and a work assistant. ChatGPT is the more capable tool overall, and the one to pick if you want the best writing, research and coding help available today.
Copilot is the right choice when your work lives inside Microsoft 365 and you want AI that understands your files, emails and meetings without copying anything across. Whichever you choose, both are improving fast, and the gap between them will keep narrowing as Microsoft and OpenAI ship new models. For more plain-English guides to every AI assistant, explore more comparisons on whatischatgpt.co.uk.
