Google's decision to push Gemini Spark onto the desktop signals it now sees agentic assistants as an operating-system-level battleground, not just a chat feature, putting direct pressure on Claude Desktop and Microsoft Copilot as the default AI layer on knowledge workers' machines. On June 30, 2026, Google announced Gemini Spark is coming to the Gemini macOS app in beta for Google AI Ultra subscribers age 18+ in the US, letting the assistant automate file-sorting, spreadsheet-building, and other