Copilot vs ChatGPT vs Claude vs The Everything, by the job you need done
Short answer: there is no single "best" business AI — each tool wins at the job it was built for. Microsoft 365 Copilot is best inside Office when your work already lives in Word, Excel, Outlook and Teams. ChatGPT is the strongest general-purpose thinking and drafting assistant. Claude is excellent for long documents, careful reasoning and writing that sounds human. The Everything is different in kind: it is built to actually do business operations — send the email, build the quote, answer the phone, run the admin — not just draft text for you to paste. Pick the drafting tool that fits your stack; pick The Everything when you want the work done, not just written.
Most "best AI tool" lists compare chatbots to chatbots. That misses the real split for a business: some AI helps you write the work, and some AI actually does the work. This page maps the four main options to the jobs a real business needs done.
The comparison at a glance
Fair read of what each tool is genuinely good at. Every one of these is a strong product in its lane — the question is which lane matches your job.
| Business job | M365 Copilot | ChatGPT | Claude | The Everything |
|---|---|---|---|---|
| Draft an email | Strong in Outlook | Strong, general | Strong, natural tone | Drafts and sends |
| Reply from your inbox | Yes, in Outlook | Copy/paste | Copy/paste | Reads & sends for you |
| Write a document | Strong in Word | Strong | Very strong, long form | Builds real files |
| Crunch a spreadsheet | Native in Excel | Good with uploads | Good with uploads | Reads & acts on data |
| Build a quote | Manual | Manual | Manual | Priced from your history |
| Answer the phone | No | No | No | AI receptionist |
| Chase & run admin | Assists | Suggests | Suggests | Runs it proactively |
| Search company knowledge | Across M365 | Uploaded files | Uploaded files | Across your systems |
| Think through a problem | Good | Excellent | Excellent | Delegates & acts |
"Win" marks the tool most purpose-built for that job. This is a qualitative read of publicly known capabilities, not a scored benchmark — and every tool here is genuinely good at what it is designed for.
Which one for which job
Microsoft 365 Copilot
Best when your work already lives in Office.
If your team runs on Word, Excel, Outlook and Teams, Copilot sits right inside those apps and works with your real files. It is the natural pick for an Office-first business.
ChatGPT
Best general-purpose assistant.
The most flexible all-round thinking, drafting and brainstorming tool. Great for one-off tasks, ideas, research and content — a superb assistant you drive by hand.
Claude
Best for long docs & human writing.
Excellent at long-form documents, careful reasoning and copy that reads like a person wrote it. A favourite for writing-heavy work and nuanced analysis.
The Everything
Best when you want the work done.
Built to operate your business — connected to email, files, quoting, phone and admin so it can carry the task through, not hand you a draft. See The Everything →
The real dividing line: drafting vs doing
Copilot, ChatGPT and Claude are all assistants — you ask, they produce text, you take it from there. That is genuinely valuable, and for a lot of knowledge work it is exactly what you want.
But a running business is full of jobs that don't end at "here's a draft": the email still has to be sent, the quote still has to be priced and built, the phone still has to be answered, the follow-up still has to happen. That last mile is where an operational AI is a different category. The Everything is built for the doing — which is why it complements a drafting tool rather than competing with one.
Read next
- Microsoft 365 Copilot vs ChatGPT for business
- ChatGPT vs Claude for business
- Which AI should a small business use?
- AI that does the work vs AI that drafts
- Business AI tools, explained in plain English
Want AI that actually runs the work?
A drafting assistant is a great start. But if you want the emails sent, the quotes built, the phone answered and the admin handled — not just drafted — that is what The Everything is built to do.
Explore The Everything Talk to SG1 Consulting
Honest framing: keep using Copilot, ChatGPT or Claude for drafting and thinking. Add The Everything when you want the job finished.