Google expected to unveil a new Gemini model at Google I/O 2026 in May 2026, with GPT-5.5-level performance but short of Mythos

Google is expected to announce a new Gemini model at I/O 2026, with reports pointing to a May 19 reveal.

A Gemini Spark beta prompt has reportedly appeared in the web app, hinting at an agent designed for long-running tasks.

Gemini Spark may use app, history, schedule, website, and location context, while requiring permission for sensitive actions.

The move would advance Google’s push into always-on AI agents and raise pressure on OpenAI and Anthropic.