Forgeron3
against the others.
Honest comparison with ChatGPT Enterprise, Mistral Le Chat Pro and Microsoft 365 Copilot. No hidden favoritism — each one wins on its own ground.
This page is not a sales pitch. For every criterion, we say where we do better, where the others do better, and what depends on your context. If your need fits a ChatGPT Enterprise license, we will tell you.
Scope: B2B products in general availability at the end of 2025, focused on internal assistants connected to business data (RAG, office integrations, compliance).
| Criterion | Forgeron3 | ChatGPT Enterprise | Mistral Le Chat Pro | Microsoft 365 Copilot |
|---|---|---|---|---|
| HostingServer and data location | France OVHcloud Marseille & Roubaix | United States Europe option on Enterprise | EU France and Sweden | Europe (EU Data Boundary) US subcontracting still possible |
| Legal sovereigntyApplicable framework for data requests | 100% FR/EU law No US extraterritorial reach | Cloud Act (US) Subject to US data requests | EU law French company | Cloud Act (US) Microsoft Corporation |
| No training on your dataWritten, auditable guarantee | Contractual commitment Signed clause, audit available | Default on Enterprise Opt-in required for training | Default on Pro | Default |
| Connection to your documentsRAG on internal corpus | Core of the product Sources, citations, per-assistant governance | GPTs & Connectors Limited, little transparency on sources | Libraries Recent, evolving | Microsoft Graph Excellent if everything lives in M365 |
| Multiple specialized assistantsOne per business role, with distinct guardrails | Unlimited HR, sales, accounting, technical… | Shared GPTs No fine-grained governance | Agents | A single global Copilot |
| Office integrationWord, Excel, Outlook, Teams | Connectors for SharePoint, Drive, mail | Plugins, API | EU connectors | Native to M365 Unbeatable within the Microsoft ecosystem |
| AI Act complianceDocumentation ready, support included | Compliance pack provided Art. 28, subprocessing | US documentation | FR documentation | US/EU documentation |
| Academy / training includedFor your teams, with manager tracking | Included 120+ modules, role-based paths, certificates | Paid separately | No | Microsoft Learn |
| Typical pricingPublic ranges, 2025 order of magnitude | 3 models: license, usage-based, flat fee. Public simulator. | ~ $60 / user / month | ~ €25 / user / month | ~ €30 / user / month (on top of M365) |
| ReversibilityRecovery of data and corpus | 30 days Open format, contractual | API export | Export | M365 export |
| SupportBeyond the tool itself | Dedicated forgerons Scoping, corpus, guardrails, measurement | Self-service | Partners | Microsoft partners |
Each one has its ground.
Choose Forgeron3
If sovereignty is non-negotiable, if you want several specialized assistants on your own corpora, and if you prefer a partner committed to training your people.
- Accounting firms, French mid-market companies
- Local governments, public sector, healthcare
- Regulated industries (legal, banking, defense)
Choose Microsoft 365 Copilot
If your whole environment is already M365 (SharePoint, Teams, Outlook), if sovereignty is not a blocker, and if you want a single cross-functional assistant.
- Large enterprises fully on Microsoft
- Cross-functional needs rather than business-specific
Choose Mistral Le Chat Pro
If you want sovereign European AI but without deep integration into your corpora, and if you are looking for a strong individual assistant at a controlled cost.
- Tech, R&D and marketing teams
- Individual use rather than business processes
Choose ChatGPT Enterprise
If you are an international team that values raw model quality, without strong sovereignty constraints, and with the budget to match.
- International scale-ups
- Creative and analytical roles