Microsoft Copilot vs Google Gemini vs Claude vs Salesforce Einstein: Business AI ROI Comparison 2026 (Costs, Performance & Which to Choose)
Complete 2026 comparison of Microsoft 365 Copilot, Google Gemini, Salesforce Einstein AI, and HubSpot Breeze: real ROI data (Beri.net, Forrester TEI), true cost per user, weekly active rates,…