Short verdict
ChatGPT Team is the broader generalist workspace that works across platforms. Gemini for Workspace is strongest when the business already uses Google Workspace as its primary productivity suite.
Pricing considerations
Both are per-user subscriptions at similar price points. The real difference is that Gemini requires an existing Workspace subscription, while ChatGPT Team is standalone. The value question depends on whether the team will use AI inside their existing productivity tools enough to justify the add-on.
Ease of use comparison
ChatGPT Team is easier as a standalone workspace that works anywhere. Gemini for Workspace is easier for teams already using Google Workspace because the AI sits directly inside Docs, Sheets and Gmail.
Implementation and migration comparison
Neither tool requires technical migration. ChatGPT Team needs governance rules and approved use cases defined. Gemini for Workspace needs the same, plus alignment with existing Workspace admin policies.
UK small business suitability
ChatGPT Team suits UK businesses that want a flexible AI workspace across departments and platforms. Gemini for Workspace suits UK teams already invested in Google Workspace who want AI embedded into their daily tools.