Microsoft Copilot uses OpenAI's GPT‑4 technology, integrated into Microsoft 365 (Word, Excel, Outlook, Teams, etc.). It's designed to work seamlessly within enterprise tools.
These copilots are often powered by OpenAI’s models (like GPT‑4) but are hosted and embedded by Microsoft in its ecosystem (Azure, M365...).
ChatGPT (by OpenAI) offers a more open and often richer experience, with early access to new features (like reasoning tools or image analysis).
Google Gemini is a direct competitor, integrated into Google Workspace. It’s currently less mature in French-language use, but rapidly evolving.
Mistral is a European player developing open-source models, but it’s not yet widely used in mainstream productivity tools.
🟢 Microsoft Copilot – Strengths:
Seamless integration into daily tools (Word, Excel, Teams…)
Enterprise-grade security and GDPR compliance
🔴 Microsoft Copilot – Limitations :
Less flexible outside the Microsoft ecosystem
Some features lag behind ChatGPT’s capabilities
🟢 ChatGPT – Strengths:
Often more precise and nuanced answers
Advanced features (file uploads, image analysis, coding)
Session history and memory
🔴 ChatGPT – Limitations :
Not designed for enterprise environments by default
Less transparent data handling without a business plan
Conversation history is linked to your user account.
If you don’t see your past conversations, make sure you’re signed in with the same Microsoft account.
Open Word, Excel, or Outlook:
If you see “Copilot” in the interface, you have access.
Otherwise, check via portal.office.com, and look under the “Work / Web” tabs.
If you only see “Web,” you’re using the web-based version of Copilot.
Yes.
Yes, Copilot can generate documents in PowerPoint, Word, and Excel.
However, these features are still improving, results may require manual adjustment and don’t always follow graphic design templates.
Yes, you can insert files of any type (Word, Excel, PowerPoint, PDF…).
Copilot can then analyze and modify them based on your instructions.
Yes, Copilot has recently introduced memory and can recall past exchanges.
That depends on your company’s internal policy.
It’s important to clarify this with your IT or compliance officer.
We recommend addressing this topic during your onboarding session.
Yes, according to Microsoft’s official licensing terms.
Yes, but capabilities are limited compared to the full version of Copilot 365.
Workspace: tied to your internal organizational environment (e.g., summarizing your own emails).
Web Space: Copilot Chat via the browser only.
Yes.
In Copilot for Microsoft 365, a small green shield icon indicates that uploaded files are not used to train the model.
A user A cannot access files from user B, even within the same work environment.
Check internally for additional privacy policies specific to your organization.
No. By default:
Data shared with Copilot is not visible to other users.
In Microsoft 365, Copilot can access your OneDrive or SharePoint, but only according to your user permissions.
If memory is enabled, Copilot still retains that information.
Go to Copilot Memory settings to manually delete specific memories.
