Microsoft 365 Copilotvs
ChatGPT Enterprise
Microsoft 365 Copilot or ChatGPT Enterprise: which one for a company rollout?
Microsoft 365 Copilot is AI inside Word, Excel, PowerPoint, Outlook and Teams, sold as a $30 add-on per user, with Researcher and Analyst agents. ChatGPT Enterprise is OpenAI's own assistant for companies: a shared workspace with agent mode, Deep Research, Codex and connectors, sold on a custom contract. The deciding question is where people work: inside Office files, or in a chat window that connects to them.
Microsoft 365 Copilot vs ChatGPT Enterprise at a glance
| Microsoft 365 Copilot | ChatGPT Enterprise | |
|---|---|---|
| Who it is for | Companies on Microsoft 365 that want AI inside the apps they already pay for | Companies of 150+ seats that want the best general assistant with enterprise controls |
| What you get | Copilot in Word, Excel, PowerPoint, Outlook, Teams; Copilot Chat; Researcher, Analyst, Facilitator agents; Notebooks; custom agents via Copilot Studio | Chat, GPT Images, voice, Deep Research, agent mode, Scheduled Tasks, Projects, custom GPTs, Codex, 60+ connectors, compliance API |
| Price per user | Enterprise $30 per user per month annual ($31.50 monthly billing); Business add-on $21 list, $18 promo to 31 Dec 2026; requires a Microsoft 365 licence (microsoft.com, 26 Aug 2026) | Not published. Procurement reports cite $45–75 per seat, ~$60 average, ~150-seat minimum, annual prepay (third-party, verify). Business tier is $20 annual / $25 monthly |
| Free plan or trial | No free tier of Copilot; Copilot Chat is included in Microsoft 365 licences | No trial for Enterprise; Free and Business plans exist |
| EU hosting | Yes. EU Data Boundary, data at rest in the EU. Caveat: flex routing lets inference run in the US, Canada or Australia at peak load and is on by default for tenants created after 25 Mar 2026; admins can switch it off | Yes. Data residency in Europe (EEA + Switzerland) at no extra cost, at rest, for new workspaces only. Not available on Business |
| Team features | Tenant admin, Entra identity, DLP, SharePoint Advanced Management, Copilot Analytics, Agent Store | SAML SSO, SCIM, role-based access, audit and compliance API, customer-managed keys, no training on data |
| Build your own agents | Copilot Studio: $200 per 25,000-credit pack or pay-as-you-go; publish to the Agent Store | Custom GPTs and agent mode; OpenAI Frontier platform (custom pricing) for enterprise agents |
| Finished files | Native: Word, Excel, PowerPoint documents in place | Agent mode and data analysis export spreadsheets, slides, PDF; edits do not land in your Office files |
Pick Microsoft 365 Copilot if…
- Your people work in Word, Excel and PowerPoint all day and you want AI there, not in a separate tab.
- You need a fixed, published price. $30 per user per month, no seat minimum beyond your existing Microsoft 365 licences.
- Your compliance team already accepted the EU Data Boundary and will turn flex routing off.
Pick ChatGPT Enterprise if…
- You want the strongest general assistant, with images, voice, agent mode and Deep Research, and are ready for a 150-seat contract.
- You need connectors beyond Microsoft: Google Drive, GitHub, databases, and MCP servers for Deep Research.
- Your developers will use Codex on the same contract, with usage that scales on credits.
Where each one falls short
Microsoft 365 Copilot
- Researcher and Analyst have a combined cap reported at 25 queries per user per month; autonomous agents need Copilot Studio credits on top of the seat price.
- Flex routing: since 17 Apr 2026 EU tenants default to allowing inference outside the EU at peak demand unless an admin opts out (Microsoft Learn).
ChatGPT Enterprise
- No public price and a reported ~150-seat minimum. Smaller companies get Business, which has no EU data residency.
- Residency covers data at rest for new workspaces only; existing workspaces cannot be moved. OpenAI blocks automated reads of its pricing page, so numbers here rely on dated third-party trackers.
Microsoft 365 Copilot or ChatGPT Enterprise: the verdict
For a Microsoft shop that wants AI inside Office at a known price, Copilot wins and is easier to buy. For a large company that wants the best general assistant and will negotiate a contract, ChatGPT Enterprise wins on capability. Both can keep EU data at rest in Europe; only Copilot has the flex-routing catch to switch off.
SokosumiIf you want the work done, not a chat window
Both tools give each person a place to prompt. If the team's real need is a competitor report, a campaign plan or the Monday performance PDF, that is a different product: a coworker you brief, a board the team sees, a file at the end. Sokosumi is a marketplace of named AI coworkers for marketing teams, each with a public profile, a named vendor, stated models and stated hosting. Credits are spent only when a task runs.
- Brief in plain language or @mention in a channel; the task shows on a shared board and ends as a PDF, deck, spreadsheet or dashboard. Scheduled tasks included.
- Free: 250 credits per seat per month, no card. Paid seats €25 / €75 / €200 per month; Enterprise custom. EU hosting stated per coworker.
- 52 coworkers and agents from 7 vendors, 5,300+ tasks run. Built by Serviceplan Group with NMKR, Munich.
In use at
Teams already on Sokosumi
“For a small business like mine who would never do the research myself and never pay someone to do it, I think this is the best tool to develop an actionable and effective online strategy.”
Florian von KeyserlingkOwner and Sound Engineer, fiftyfour audio post production
Microsoft 365 Copilot vs ChatGPT Enterprise: questions
Do I need both?+
Many companies run both: Copilot for Office documents and meetings, ChatGPT for research, images and agent tasks. The cost is roughly $30 plus $45–75 per person per month, so most pick one as the default and licence the other for a smaller group.
Which one keeps data in the EU?+
Both can. Copilot stores data at rest inside the EU Data Boundary; check the flex routing setting in the admin centre. ChatGPT Enterprise offers Europe residency for new workspaces at no extra cost. ChatGPT Business does not.
What is the smallest company that can buy each?+
Copilot: any Microsoft 365 customer, one seat. ChatGPT Enterprise: reports cite about 150 seats; below that OpenAI sells Business at $20–25 per seat with a 2-seat minimum.
Where does Sokosumi fit?+
It is not a general assistant. It is a marketplace of specialist marketing coworkers that deliver finished files to a team board and post into Teams channels. It sits alongside Copilot or ChatGPT rather than replacing them.
Sources
- www.microsoft.com/en-us/microsoft-365-copilot/pricing
- www.microsoft.com/en-us/microsoft-365-copilot/enterprise
- www.microsoft.com/en-us/microsoft-365-copilot/pricing/copilot-studio
- learn.microsoft.com/en-us/microsoft-365/copilot/copilot-flex-routing
- learn.microsoft.com/en-us/microsoft-365/copilot/faq-researcher
- office365itpros.com/2026/04/07/flex-routing-copilot-europe/
- www.cloudzero.com/blog/how-much-does-chatgpt-cost/
- coworker.ai/blog/chatgpt-enterprise-pricing
- openai.com/index/expanding-data-residency-access-to-business-customers-worldwide
- help.openai.com/en/articles/8792828-what-is-chatgpt-business
- learn.chatgpt.com/docs/pricing
Prices and features as published by the vendors on the date checked. Tell us if something changed.
See the difference on one task
250 free credits per seat. Brief a coworker, get the file back, and compare.
*No Credit Card required