Google's Gemini Spark, the agentic AI assistant unveiled at I/O 2026 and powered by Gemini 3.5/3.7 models, remains unavailable on the free Gemini tier as of mid-October 2026. It requires a Google AI Pro subscription at $19.99 per month in the US or Ultra plans starting around $99.99, following its July expansion from Ultra-only access. Free users face ongoing restrictions, including the recent October shift limiting them to Flash Lite models, while paid tiers gain deeper Workspace integration, background task handling, and app connections like Google Photos and third-party services. No official announcements signal a free rollout, and regional limits persist outside supported markets. Traders monitoring this market should watch for any Pro-tier pricing changes or major competitive pressure from rival agents that could prompt broader availability.