Microsoft Copilot vs ChatGPT vs Claude: an SME comparison

Which candidates belong on your shortlist?

Start with where the work happens and which business accounts are already approved. The matrix below recommends where to begin a comparison; it does not declare a measured quality winner. Here, Copilot means its use within the Microsoft 365 work environment; other offerings carrying the Copilot name may have a different scope.

Microsoft describes access to organisational data through Microsoft Graph and existing permissions. That makes Copilot a natural first candidate when this access is central to everyday work. For a standalone text based on supplied notes, that integration advantage is less relevant.

ChatGPT or Claude: where should you start?

If one is already approved as a business tool, start there. Familiar controls, existing accounts and clear ownership are concrete advantages of your starting position; they do not establish general model quality. Add the other candidate if the first misses required content, needs too much correction or cannot support the necessary workflow.

Without an existing account, first check which offering meets your required file formats, data approvals and account administration needs. If ChatGPT and Claude both qualify, compare those two using the worked example. Assess writing style and analytical quality using your own texts and documents.

• Data access: Can you supply the required material through an approved route, or would every task require manually copying information from several systems?
• File formats: Can both candidates read your actual sample file completely, including tables, page references and scanned passages? Compare the answer with the original; accepting the upload alone is not enough.
• Work steps: How often must you provide sources again or repeat instructions before the draft is usable? Record the additional manual steps for each candidate.
• Transferring the result: Do tables, paragraphs and source references survive transfer into your destination system? Try the route you actually need, such as a quotation template or customer email. Eliminate a candidate if a required step is unavailable; if both qualify, compare the measured total effort.

How to run the same test

Copy the two fictional sources and the instruction from the example into a new conversation in each shortlisted tool. Use only the supplied text for this first round. Record the date, product, plan, displayed model and enabled features where visible.

Compare each first response with the expected answer. An invented delivery date or incorrect price is a factual error; different polite wording is not. If corrections are needed, record your follow-up instructions and the time needed to reach a sendable draft. Keep the expected answer with the reviewer and out of the prompt.

Does the result fit everyday work?

Repeat the comparison with approved material from your own work. Give each tool the same information and instruction. This time, also assess how you supply the information and move the reviewed draft to its destination. Pasting text once tests answer quality; a workflow involving storage and permissions tests the intended use.

For each case, record missing required details, incorrect facts, follow-up questions, minutes spent preparing and correcting the result, and minutes spent transferring it to the destination system. Compare the total with your existing process without AI. Use several typical cases, including one with conflicting information. One good draft is not enough to justify adoption.

What must be clear before buying?

For the specific business offering, check which data may be processed, who approves connections, which access permissions apply and how accounts are removed when people leave. The manufacturer sources below cover different offerings and terms; do not automatically apply their statements to personal accounts, other plans or additional connections.

Among candidates that meet your organisational requirements, choose the tool that consistently produces usable results for your tasks with little total effort. Include licences, setup, training and support. If your existing tool meets the requirements, you do not need a second provider. If every candidate repeatedly invents required details, improve the input and process before buying more licences.