Gemini Spark

https://gemini.google.com/spark

$100+/month (bundled with Google AI Ultra)

24/7 Background Execution — Runs on Google Cloud VMs, not your device. Tasks complete even with closed laptop
Native Gmail Integration — Email Spark directly, draft and send responses from inbox context
Google Workspace Deep Links — Out-of-the-box Docs, Sheets, Slides, Drive access without setup
Autonomous Web Action — Browses Chrome to gather info, compare prices, complete real-time tasks
MCP Support — Connect to external services via Model Context Protocol
Android Halo Tracking — Mobile oversight without interrupting the agent
Real-World Task Execution — Books, rebooks, drafts, sends — full task completion, not just suggestions

24/7 autonomous execution on Google Cloud — works even when your laptop is closed
Deep native Gmail and Workspace integration — no manual OAuth setup
Android Halo mobile tracking — monitor task progress without interrupting the agent
MCP (Model Context Protocol) support — connects to external services beyond Google
Real-world task execution — books flights, drafts emails, updates itineraries autonomously
Backed by Google's infrastructure — reliability and privacy posture

Only available to Google AI Ultra subscribers — $100+/month is steep for individuals
US-only at launch — no international availability confirmed yet
Early product — long-term reliability still being proven at scale
Premium pricing limits it to professionals and power users, not consumers