Google Rolls Out Gemini Spark AI Agent to Ultra Subscribers

Google began rolling out Gemini Spark this week as a beta to subscribers of the company’s AI Ultra plan, which starts at $100 a month. ” Users can operate it from mobile or desktop devices, including iPhones. A Wired reporter tested the agent by granting it access to a personal Gmail inbox, Docs files, and Calendar.

The reporter asked the agent to plan an upcoming birthday party. Within minutes the agent located an existing karaoke-bar reservation, produced a five-page itinerary, suggested 15 guests, listed nearby restaurants, and drafted an invitation email.

” The agent cited shared travel records and emails as the basis for the ranking. The reporter was not included on the list. When asked again about the relationship, the agent replied that shared housing, mutual account recovery, and travel records showed the two were “close daily companions,” but did not assign a different label.

The agent attempted to book dinner reservations by operating a remote browser and triggering a verification code sent to the reporter’s phone, but the transaction did not complete. The reporter made the reservations manually. An email draft produced by the agent included venue rules and age restrictions that the reporter later asked to be rewritten in a more casual tone; after approval, the agent sent a test message.

Google’s help page states that the agent scans files for exact keywords, past itineraries, and transactions rather than making inferences about personal identity. The same page warns that connecting an agent to personal data could expose users to prompt-injection attacks that might publish private information or forward messages without consent.