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Costs & comparisons

What per-seat AI costs for your whole office.

Short answer

At list prices, ChatGPT Business and Claude Team cost $25 per user per month billed monthly, or $20 billed annually. Microsoft 365 Copilot Business is $21 per user per month on an annual plan, on top of Microsoft 365. Multiply by your headcount, or use the calculator below to compare against one flat price.

Calculator

Enter your headcount. Prices are list prices for standard seats, checked November 13, 2026.

ChatGPT Business (Standard)$250/mo
Claude Team (Standard)$250/mo
Microsoft 365 Copilot Business add-on (annual, plus Microsoft 365)$210/mo
AdminOnsite Office (whole office)$399/mo$5,187 first year incl. setup

Per-user prices, November 2026

PlanMonthly billingAnnual billingMinimumNotes
ChatGPT Business, Standard seat$25$202 seatsCredits for usage beyond included limits
ChatGPT Business, Premium seat$125$1002 seats totalHigher usage limits
ChatGPT EnterpriseContact salesContact salesSales-led
Claude Team, Standard seat$25$202 membersUp to 150 seats
Claude Team, Premium seat$125$1002 members totalHigher usage
Microsoft 365 Copilot Business (add-on)—$21 ($18 promotional shown)—Requires a Microsoft 365 plan; some AI features billed by usage
Microsoft 365 Business Standard with Copilot—$23.50—Bundle including the Microsoft 365 apps
Microsoft 365 Business Premium with Copilot—$32.00—Bundle with advanced security

US list prices from each vendor’s own page, checked November 13, 2026. Prices change; check the vendor before you buy.

What that adds up to

Standard seats at $20–25, compared with the AdminOnsite plan sized for each office. AdminOnsite figures are monthly price; first-year totals include the one-time setup.

PeoplePer-seat AI per month ($20–25)Per-seat AI per yearAdminOnsite plan per monthAdminOnsite first year
5$100–125$1,200–1,500Practice $249$3,287
10$200–250$2,400–3,000Office $399$5,187
15$300–375$3,600–4,500Office $399$5,187
20$400–500$4,800–6,000Firm $699$8,887
30$600–750$7,200–9,000Firm $699$8,887

The honest break-even

Per-seat cloud AI is cheaper for small teams. At $25 a seat, AdminOnsite Office ($399) breaks even at 16 people on monthly price alone; at $20 a seat, at 20. Premium seats, at $100–125 each, change the math quickly: four Premium seats cost about as much as the Office plan.

So the case for AdminOnsite isn’t a lower bill for everyone. It’s where client files are processed, no usage credits, one price as you hire, and a box you own after 24 months. If none of that matters to you, per-seat cloud AI is probably the better buy.

Questions

How much is ChatGPT Business per user?

$25 per user per month billed monthly or $20 billed annually for Standard seats; Premium seats are $125 or $100. Minimum two seats.

How does Claude Team billing work?

Claude Team needs at least two members and supports up to 150 seats. Standard seats are $25 per member monthly or $20 annually; Premium seats $125 or $100. Usage limits are per member.

How much is Microsoft Copilot per user?

Microsoft 365 Copilot Business is listed at $21 per user per month, paid yearly, with an $18 promotional price shown, and it requires a Microsoft 365 plan. Bundles with Business Standard ($23.50) and Business Premium ($32.00) are also listed.

What does ChatGPT Enterprise cost?

OpenAI doesn’t publish Enterprise pricing; it’s sales-led.

Does AdminOnsite charge per seat?

No. One monthly price for the office: $249, $399 or $699 plus setup.

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