Google announced Gemini Spark at I/O 2026, an always-on agentic AI assistant built on Gemini 3.5 and the Antigravity harness. It runs on dedicated cloud VMs, integrates natively with Gmail and Workspace, and will be available to AI Ultra subscribers next week.[/tldr]
Google has unveiled Gemini Spark, an always-on personal AI agent that can receive tasks via a dedicated Gmail address, browse the web through Chrome, and work around the clock without requiring users to keep a laptop open. The company announced the product at its I/O 2026 developer conference on Monday, positioning it as its most ambitious move yet in the intensifying race to build autonomous digital assistants.
Spark is built on Gemini 3.5 and powered by the Antigravity agent harness, Google’s newly expanded platform for building agentic software. It runs on dedicated virtual machines on Google Cloud, which means it can execute long-running tasks in the background without tying up a user’s device. CEO Sundar Pichai described it as a “personal AI agent that helps you navigate your digital life.”
The product’s most distinctive feature is its tight integration with Google’s own ecosystem. Users can email Spark directly through a dedicated Gmail address, much as they would message a human colleague, and the agent can pull context from Gmail, Google Docs, and other Workspace applications without requiring manual setup. That out-of-the-box connectivity gives Google a structural advantage over rivals whose agents must rely on third-party integrations to access the same services.
