In 2026, four mainstream AI tools dominate enterprise use: OpenAI ChatGPT Enterprise, Microsoft Copilot for Microsoft 365, Google Gemini for Workspace and Anthropic Claude for Enterprise. On the surface they look similar. In practice they differ significantly in data protection, integration and pricing.
Strength: best general model for understanding, reasoning and creative tasks. GPT-5 scores highest on most benchmarks. Weakness: no native integration into Microsoft or Google apps. Access requires a browser tab or custom API integration. Price: ~$60 / user / month (Enterprise, minimum 150 users). Data protection: no training on enterprise data, SOC 2 Type II, GDPR-compatible, EU data residency available.
Copilot, ChatGPT and the rest are personal productivity tools. They do NOT solve these strategic challenges:
In 2026, the choice is not "best tool" but "best combination of tools". Most European enterprises run Copilot on a Microsoft 365 base, use ChatGPT or Claude for specialist tasks and build their own AI platform for agents and use-case governance. Tools are an order of magnitude cheaper than the strategic decisions around them. Use-case prioritisation and governance drive ROI — not tool selection.