For most small businesses, Claude and ChatGPT are close enough that either one will handle the everyday work well: drafting emails and proposals, summarizing long documents, and helping with spreadsheets. The differences that matter are in the extras (ChatGPT makes pictures and Claude doesn’t), which of your tools each one connects to, and which one your team will actually open every day, so try both on your own work for a week before you pay for seats.
We use both in our own work, and we can set up either one for a business. Everything below comes from Anthropic’s and OpenAI’s own pages, checked October 2026. These products change monthly, so check the vendor’s page again before you buy. When a business wants an assistant that works inside its own email, files and customer records instead of a chat window, that’s our AI integration work.
Claude vs ChatGPT, job by job
Writing emails and proposals. Both write a clean first draft from rough notes, and both can remember your preferences and keep a standing set of instructions inside a Project. The difference here is taste. One will sound more like you than the other, and the only way to find out is to give both the same job. Anthropic also sells a Claude for Small Business plugin with ready-made workflows for proposals, lead replies and month-end bookkeeping checks. Anthropic says that by default nothing sends or pays without your OK. Whichever you pick, a person reads every proposal before it goes out.
Reading long documents and contracts. Both read long files well. Anthropic lists a context window (how much text it can hold at once) of up to 1M tokens, depending on the model. OpenAI lists roughly 320 pages of text as the input limit for its reasoning models on Plus and Business. Either will take a typical lease, vendor agreement or equipment manual in one go. Use them for summaries, not legal advice. Ask for the exact clause behind each point, so you can check it in seconds, and have a lawyer read anything that matters before you sign it.
Spreadsheets and data. Both can open a spreadsheet you upload, clean it up, total it and chart it. OpenAI’s pricing page lists data analysis, interactive tables and charts, and extensions for Excel, Word, PowerPoint and Google Sheets. Anthropic’s lists file creation with code execution on every plan, plus Claude for Microsoft 365 and Claude for Microsoft Outlook on paid plans. Strip customer names and account numbers before you upload anything, and check the totals against your books.
Research with web search. Both search the web on every plan, free included, and both offer a longer research mode that reads many pages and writes up what it found. ChatGPT calls it deep research (limited on Free, expanded on Plus). Claude calls it Research (Pro and up). Open the sources it gives you. A confident summary of an outdated page is still out of date.
Working with your files. Both have Projects: a folder where you keep documents and instructions so you don’t paste them in every time. Both connect to the places your files already live. Anthropic’s connectors page lists Google Drive, Gmail, Google Calendar and Microsoft 365 (SharePoint, OneDrive, Outlook and Teams). The Claude for Small Business page names QuickBooks, HubSpot, Shopify, Stripe, Gusto and Canva. OpenAI’s Business plan lists Microsoft 365, Google Drive, Slack, GitHub, Linear and Figma. Anthropic says Claude sees only what the connected account can see, so give it an account with the access it needs and no more.
Images and voice. This is the clearest split. ChatGPT creates images on every plan (limited on Free). Claude doesn’t generate photos or illustrations, according to Anthropic’s support page. It builds diagrams, charts and interactive visuals instead, and paid plans include Claude Design, Slides and Docs. Both have a voice mode. ChatGPT adds voice with video on Go and above. If you make social posts, flyers or mockups every week, that alone may settle it.
Coding help. Both include a coding tool: Claude Code on Claude’s paid plans, Codex on ChatGPT (limited on Free). For an owner, that usually means a spreadsheet formula, a small website fix or a script that tidies a file. Anything that touches a live website, your customer records or payments needs someone who can read the code before it runs.
Side by side
| Job | Claude | ChatGPT |
|---|---|---|
| Emails and proposals | Strong drafts, Small Business plugin | Strong drafts, custom GPTs |
| Long documents | Up to 1M tokens, varies by model | About 320 pages (reasoning models, Plus and Business) |
| Spreadsheets | File creation with code, Claude for Microsoft 365 | Data analysis, Excel and Google Sheets extensions |
| Web search and research | Every plan, Research on Pro and up | Every plan, deep research expanded on Plus |
| Connectors | Google Drive, Gmail, Calendar, Microsoft 365, QuickBooks and more | Microsoft 365, Google Drive, Slack and more |
| Image generation | No (diagrams and charts only) | Yes |
| Voice | Yes | Yes, plus voice with video |
| Coding tool | Claude Code (paid plans) | Codex (limited on Free) |
| Team plan | Team, 2 to 150 people | Business, 2 or more users |
| Training on your data | Your setting on personal plans, off by default on Team | Opt-out on personal plans, off by default on Business |
Source: each vendor’s own pricing and help pages, checked October 2026.
Plans and prices, as of October 2026
From Claude’s pricing page and ChatGPT’s pricing page, before tax:
Claude
- Free: $0, with the Sonnet and Haiku models, web search and up to five Projects.
- Pro: $20 a month billed monthly, or $17 a month on the annual plan ($200 up front). Adds the Opus model, Research, Claude Code, and Projects beyond the free plan’s five.
- Max: from $100 a month, for people who use it all day.
- Team: $25 per seat a month billed monthly, or $20 billed annually, for 2 to 150 people. Premium seats with more usage are $125 monthly or $100 annually.
- Enterprise: $20 per seat a month billed annually, plus usage at API rates.
ChatGPT
- Free: $0, running GPT-5.6 Luna.
- Go: $8 a month. OpenAI notes this plan may include ads.
- Plus: $20 a month. Adds the GPT-6 models, scheduled tasks, custom GPTs and expanded deep research.
- Pro: from $100 a month.
- Business: $25 per user a month billed monthly, or $20 billed annually, for 2 or more users.
- Enterprise: custom pricing through OpenAI’s sales team.
So a team plan costs the same on both, as of this check. For a company, the team plan is the one to compare: it puts work in one account the business controls, with central billing and single sign-on. If you’re weighing ChatGPT’s personal and business tiers against each other, our post on ChatGPT Plus vs Business covers that choice.
Your data on each plan
The short version, from the vendors’ own pages in October 2026:
- Personal plans (Claude Free, Pro and Max, ChatGPT Free, Go, Plus and Pro). Whether your chats help train future models depends on a setting. Anthropic’s privacy article says it uses chats for training if you allow it in your privacy settings (or if a chat is flagged for safety review), and that Incognito chats aren’t used. OpenAI’s pricing page lists training on these plans as “opt-out available.”
- Team and business plans (Claude Team and Enterprise, ChatGPT Business and Enterprise). Both vendors say they don’t train on your content by default.
Either way, customer personal information, health and payment details, passwords and anything under an NDA stay out unless the system was built for that kind of data. We go deeper on what staff should never paste in Is ChatGPT safe for business?, and the same rules apply to Claude.
Already on Microsoft 365 or Google Workspace?
Look at what you already pay for before you add another subscription. Google’s Workspace pricing page lists Gemini in Gmail, Docs and Meet on its business plans (checked October 2026). Microsoft builds Copilot into Microsoft 365, and what you get depends on your plan. If your team lives in Outlook and Excel, or in Gmail and Docs, the built-in assistant may cover the simple jobs, and Claude or ChatGPT becomes the second tool for the heavy ones. Both Claude and ChatGPT also connect to Microsoft 365 and Google Drive, so picking one doesn’t mean moving your files.
How to choose: three real tasks, one week
Public benchmarks measure general tasks, not your inbox. Run your own test instead:
- Pick three tasks you do every week. For example, a reply to a customer complaint, a summary of a long document you actually received, and a cleanup of a real spreadsheet.
- Remove the private details. Names, phone numbers, account numbers. The test works just as well without them.
- Give both the same instructions every day for a week. Use the free plans, or pay for one month of each.
- Score what you had to fix. Which draft needed fewer edits? Which followed your format? Which one showed where its answer came from? Which did you reach for on day five without thinking?
The one you reach for is usually the right one. If the result is a tie, pick the one that connects to the tools you already use, or the one that makes images if you need them. When a whole team is going to use it, a little training pays off more than the brand you choose. Our post on AI training for employees covers what that looks like.
Why some businesses pay for both
Plenty of businesses end up with both, and that’s a reasonable choice:
- Different jobs. Someone who makes graphics needs ChatGPT’s image tools. Someone else may simply prefer how Claude writes or reads long files.
- A split team. People do better work in the tool they like, and a tool nobody opens does nothing for you.
- A backup. Both services have busy days and usage limits. A second tool keeps work moving.
If you go that way, put both on business plans with the same rules, so nothing slips into a personal account. We use both ourselves, and we’ll tell you when one is plenty.
If you’d like help choosing, setting up the business accounts, or connecting either one to your email and files, that’s what the call below is for.