Azimut AI
The question "what's the best AI for my company?" usually comes after months of disorderly use: people paying for ChatGPT with their own card, others using Claude or Gemini for free, and management not knowing what company data is going into each tool. The good news is that the four big assistants are all very capable. The decision isn't about which model is smartest this month, but about six criteria that change much more slowly.
The short answer, depending on your company
- Your company works almost entirely in Microsoft 365 (Outlook, Teams, SharePoint): start with Microsoft 365 Copilot. It's inside the apps and sees data with existing permissions. Compare in ChatGPT or Copilot.
- Your company works in Google Workspace: try Gemini first, which is already included in your license from Business Standard.
- A team of up to 150 or 200 people, varied work and no need for European residency: ChatGPT Business or Claude Team. Decide with a real test; we help in Claude or ChatGPT.
- 100 to 1,000 employees, varied systems and no wish to be tied to a provider: consider a multi-model platform, which gives access to several models with the company's data and agents shared.
The six criteria that decide
1. Where your workforce works
This is the criterion that weighs most. Copilot is worth what your Microsoft 365 is worth, and Gemini what your Google Workspace is worth: both take advantage of already holding the email, documents and meetings. ChatGPT and Claude are standalone apps that connect to those tools through connectors, which gives them more freedom and a bit more setup work.
2. What data it will touch and where it's stored
None of the four trains on company data on their business plans. The difference is where data is stored and processed:
- ChatGPT: European data residency only on Enterprise and Edu, for new customers; not on Business.
- Claude: app data is stored in the United States; there's no European residency in claude.ai.
- Microsoft 365 Copilot: within Microsoft's EU Data Boundary, with exceptions: Bing web searches and Anthropic models, which are off by default in the EU.
- Gemini in Workspace: processing in EU data regions is only available on Enterprise Plus or with the Assured Controls add-on, not on Business plans.
If your company handles customers' personal data or sensitive information, this row decides more than any quality comparison.
3. How many models you need
According to ICONIQ (July 2026), software companies building AI products use 3.3 model providers on average. And leadership changes: OpenAI went from 50% to 27% of enterprise spend on models between 2023 and 2025, and Anthropic from 12% to 40%, according to Menlo Ventures. Each assistant mainly gives you its maker's models; Copilot is a partial exception, with OpenAI and Anthropic models. If you want to be able to switch models without switching tools, you need a model-agnostic layer. We explain it in why models rotate.
4. Who owns the agents and the knowledge
The valuable part isn't the chat, but what the workforce learns to do with it: refined instructions, agents that save hours, reliable sources. Ask where that lives, whether it can be shared with permissions across the company and what happens if you switch providers tomorrow. In almost every case it lives inside the tool and follows its changes.
5. Control: identity, permissions and spend
For a mid-sized company, IT will ask for single sign-on, automatic provisioning from the directory (SCIM), audit logs and spend control by team. SCIM isn't in ChatGPT Business or Claude Team: you have to go to Enterprise.
6. Total cost, not price per seat
Billed annually, per user per month: Copilot €15.60 on promotion until December 31, 2026 (€18.20 afterwards, and €26 above 300 users, with the Microsoft 365 license on top), Claude Team €18, ChatGPT Business €21 and Gemini included in Workspace. Add usage billed separately, user caps and, above all, licenses that go unused. We detail it in what each option costs.
The four options compared
| Criterion | ChatGPT | Claude | Copilot | Gemini |
|---|---|---|---|---|
| Best fit for | Varied work, mixed tools | Long documents, drafting, coding | Companies on Microsoft 365 | Companies on Google Workspace |
| Team plan, billed annually | Business, €21 | Team, €18 | €15.60 on promotion; €18.20 | Included from Business Standard, €13.60 |
| Team plan users | 2 to 200 | 2 to 150 | Up to 300 | Up to 300 |
| Data in the EU | Enterprise only | Not in the app | Yes, with exceptions | Enterprise Plus or Assured Controls only |
| Models | OpenAI | Anthropic | OpenAI and Anthropic | |
| Prerequisite | None | None | Microsoft 365 | Google Workspace |
Sources: chatgpt.com/es-ES/pricing, claude.com/es/pricing, microsoft.com/es-es/microsoft-365-copilot/pricing and workspace.google.com/pricing, prices for Spain checked on October 6, 2026; help.openai.com, privacy.claude.com, learn.microsoft.com and the Google Workspace Updates blog for data residency. Prices exclude VAT except ChatGPT Business, whose page doesn't say.
The fourth way: a multi-model platform
The four options share one limitation: they tie you to a provider and its tool. A multi-model platform puts a layer owned by the company above the models: each team chooses the model per task, agents and knowledge are shared with permissions across the organization and spend is visible by team. That's Azimut's proposal, with models from OpenAI, Anthropic, Google and Mistral, hosted on Google Cloud in Madrid, for €29 per seat per month billed annually.
It isn't for every company. If you work entirely in Microsoft and an assistant is enough, Copilot is cheaper. It makes sense for companies of 100 to 1,000 employees with varied systems that want AI to belong to the organization rather than to a provider.
How to decide in four weeks
- Week 1. Measure the starting point. Who uses AI today, with which tool, on which plan and what company data it touches.
- Week 2. Filter by data and requirements. Rule out options that don't meet what your data protection and IT teams require.
- Week 3. Test with real tasks. Two or three cases per department, the same tasks on each option, with the people who already use AI.
- Week 4. Decide on total cost. Licenses, usage billed separately, prerequisites and who will sustain the rollout. Our buyer's guide with 24 questions works as a checklist.
Frequently asked questions
What's the best AI for business?
It depends on where the company works and what data it will touch. With Microsoft 365, Copilot; with Google Workspace, Gemini; for a standalone assistant in teams of up to 150 or 200 people, Claude Team or ChatGPT Business; and for companies of 100 to 1,000 employees that don't want to depend on a provider, a multi-model platform.
Which AI is safest for a company?
None of the four trains on company data on their business plans. The difference is where data is stored and processed: European data residency is only available on some plans, and Claude stores its app data in the United States.
Does my company need more than one AI model?
It's increasingly common: software companies building with AI use 3.3 model providers on average, according to ICONIQ (July 2026). It isn't mandatory, but depending on a single one exposes the company if it stops being the best for its tasks or changes its price.
Can I start for free?
Yes: Microsoft 365 Copilot Chat is included with Microsoft 365 business licenses, Gemini comes with Google Workspace, and ChatGPT and Claude have free plans. But free personal plans aren't suitable for company data.
What does the EU AI Act require of a company using these assistants?
Today the prohibited practices, staff AI literacy and transparency obligations apply. High-risk obligations are postponed to December 2027. We summarize it in our guide to the AI Act and GDPR.