Gemini is Google's Swiss Army knife: multimodal, deeply embedded in Workspace, and genuinely impressive at drafting, reasoning, and research tasks. It shines for individuals and teams already living in Gmail and Docs who want AI woven into their daily tools. Its weakness is reliability — hallucinations and context drift are recurring complaints that prevent it from being fully trusted for high-stakes outputs. Glean plays an entirely different game. It's not a content creator — it's an enterprise memory system. With 100+ native integrations, it connects every app your company uses and surfaces the right answer from the right source. Its trust architecture is meaningfully stronger, and its market traction reflects genuine enterprise adoption, not hype. The key difference: Gemini generates, Glean retrieves. Gemini helps you create new content; Glean helps you find what already exists inside your organization. They're not really competing for the same job. Buy Gemini if you're a knowledge worker or small business wanting an AI co-pilot for content and research. Buy Glean if you're a mid-to-large enterprise where tribal knowledge, siloed data, and onboarding friction are costing you real money every quarter.