AI Tools for Small Business: Copilot, ChatGPT, Claude and What to Watch For
When we first wrote about Copilot, ChatGPT and self-hosted models in early 2025, AI assistants were a novelty in most small offices. They are now ordinary tools, used daily for drafting, summarising, searching and analysing, and the questions have changed. Which one, for what, at what cost, and with what rules about company data. This article replaces three earlier ones with a plain comparison of the main tools for business use, the jobs they do well and badly, and the short policy every business should write before anyone pastes a customer list into a chat window.
The tools, compared
| Tool | What it is | Best for | Cost and data |
|---|---|---|---|
| Microsoft 365 Copilot | An assistant inside Word, Excel, Outlook, Teams and PowerPoint that can read your own documents, mail and meetings | Summarising email and meetings, drafting in your own files, finding things across the tenant, Excel analysis | Copilot Chat included with Microsoft 365; the full Copilot is an add-on licence per user; data stays in your tenant under your existing permissions |
| ChatGPT (OpenAI) | A general assistant with strong writing, reasoning, coding and image features; business and enterprise plans | Drafting, research, brainstorming, code, custom assistants for repeated tasks | Free and paid consumer plans (do not use for company data); Team and Enterprise plans exclude data from training |
| Claude (Anthropic) | A general assistant known for careful long-document work and writing | Reading and summarising contracts, reports and policies; drafting; analysis of long material | Business plans exclude data from training; available through the web, Microsoft and Google clouds |
| Google Gemini | Built into Gmail, Docs, Sheets and Meet for Workspace customers | Same jobs as Copilot for Google Workspace users | Included in Workspace business plans; data stays in your Workspace tenant |
| Self-hosted open models | Open-weight models run on your own servers | Regulated data that cannot leave the building; experimentation | Hardware and staff time; results lag the commercial services |
What they do well
- Summarising. A 40-message email thread, an hour-long recorded meeting, a 30-page contract, into a page you can act on. This is the daily win for most people.
- First drafts. The proposal, the policy, the difficult customer reply, the job description. The draft is not the finished product, but it is an hour saved.
- Finding things. Copilot and Gemini answer “what did we agree with that customer about delivery” from your own mail and files, with links.
- Spreadsheets. Explaining a formula, building a pivot, spotting the outlier, writing the macro that nobody on staff could.
- Customer-facing routine. Draft answers to common questions, translations, tone adjustments, and chatbots on a website for after-hours questions, with a human path for anything that matters.
- Code and automation. Small scripts, Power Automate flows and integrations that used to need a developer for an afternoon.
What they do badly
- Being right. They produce fluent, confident text that is sometimes wrong, invents citations and misreads numbers. Every output that leaves the business is checked by a person who understands it. This is not a bug that will be fixed next quarter; it is how the tools work.
- Anything requiring accountability. Tax, legal and medical judgments, hiring decisions, security decisions. Use them to prepare; let a professional decide.
- Confidential data on the wrong account. A consumer ChatGPT account is not a place for a customer list, a payroll file or a patient record. See the policy below.
- Replacing a system of record. A chat window is not a CRM, a ticket system or a filing system.
A one-page AI policy
- Approved tools only, on business accounts the company controls, signed in with the work identity. Consumer accounts and browser extensions are not approved.
- What goes in. Public and internal information is fine on approved business plans. Customer personal data, health information, card data, credentials, and anything under a confidentiality agreement stays out unless a signed agreement with the vendor covers it and IT has said so.
- What comes out is a draft until a person has checked it. Outputs used with customers, in contracts or in numbers are reviewed by someone accountable.
- Meetings and recording. Tell people when an AI notetaker is present; some clients and some states require consent.
- Permissions matter more than before. Copilot and Gemini can find anything the person could already open, including the HR folder that was accidentally shared with everyone. Tidy sharing before turning them on; our article on cloud security risks covers how.
- Ask first. A named person answers “can I use this for that”.
Getting started sensibly
Turn on what is already included: Copilot Chat for Microsoft 365 users, Gemini for Google Workspace users. Pick three or four people who write, analyse or answer customers all day and give them the full Copilot or a business ChatGPT or Claude plan for a quarter, with the policy above and a short session on how to ask well. Measure what they stopped doing by hand. Then expand to the roles where it paid off and not to the ones where it did not. The mistake is buying licences for everyone and training no one; the licences go unused and the one person who does use it pastes the wrong thing into the wrong tool. Our AI support and integration service handles the setup, the permissions review and the policy, and our comparison of Microsoft 365 and Google Workspace covers the platform choice that decides which assistant you get for free.
Free tools from OAC Technology
- Microsoft 365 plan picker: which Microsoft 365 plans fit your people
- Cyber insurance readiness check: fourteen questions insurers ask, scored in a minute
- IT glossary: the terms in this article, explained plainly
Common questions
Which AI tool should a small business start with?
The one built into the platform you already use. Microsoft 365 users get Copilot Chat included and can add Microsoft 365 Copilot per user; Google Workspace includes Gemini. Both keep your data inside the tenant you already control. Add ChatGPT or Claude business plans when people need a stronger general assistant or long-document work.
Is it safe to put company data into ChatGPT?
On a consumer account, no; assume anything pasted may be retained and used for training. On business plans from OpenAI, Anthropic, Microsoft and Google, data is contractually excluded from training and kept under the business’s control, which is why the rule is business accounts only. Even then, regulated data such as patient records and card numbers stays out unless a signed agreement covers it.
What does Microsoft 365 Copilot cost?
Copilot Chat, the web assistant, is included with Microsoft 365. Microsoft 365 Copilot, which works inside Word, Excel, Outlook and Teams with your own documents and email, is an add-on licence per user per month; check Microsoft’s site for the current price. It is worth it for people who live in those applications and not for those who do not.
Can AI replace our help desk or our bookkeeper?
No. It drafts, summarises, searches and suggests; it does not take responsibility. It makes a good bookkeeper faster and a careless one more confidently wrong. Every output that leaves the business should be checked by a person who understands it.
What about self-hosted or open-source models?
Running an open model on your own hardware keeps data entirely in-house, which appeals to some regulated businesses, but it needs capable servers, someone to maintain it and an acceptance that the results lag the commercial services. For most small businesses a business plan from a major vendor gives better results with adequate privacy for far less effort.
Do we need a written AI policy?
Yes, and it can be a page: which tools are approved, business accounts only, what data may and may not be entered, that outputs are checked before use, and who to ask. Several cyber-insurance applications now ask whether one exists.
Talk to us
If your team is already using AI tools without any rules, or you want to know which one is worth paying for, we will review what you have, write the one-page policy with you and set up the approved tools. Call 952-548-5558 or contact us; the first conversation is free and there is no long-term contract.
