According to Google Gemini on X, Notebooks in Gemini are rolling out this week on the web for Google AI Ultra, Pro, and Plus subscribers, with mobile, broader European availability, and free user access coming in the next few weeks (source: Google Gemini, Apr 8, 2026). As reported by Google’s official blog linked in the post, Notebooks provide a structured workspace to plan projects, save prompts, iterate on code, and preserve chat context for reproducible workflows, enabling teams to document prompts, attach data, and generate shareable outputs for product specs, research notes, and code reviews (source: Google blog via goo.gle/4cyHt9m). According to the announcement, the staged launch creates immediate opportunities for enterprise and prosumer cohorts to standardize prompt engineering, governance, and collaboration, while the pending free tier and EU expansion can drive wider adoption, funneling organizations toward paid tiers for advanced features and compliance needs (source: Google Gemini on X).

According to @demishassabis, Google AI Ultra subscribers can now access Gemini 3 Deep Think mode in the Gemini app, with full details outlined on the Google Blog. According to the Google Blog, Deep Think is designed for multi-step reasoning, extended context planning, and tool-augmented problem solving, targeting use cases like complex coding assistance, multi-document analysis, and research planning. As reported by the Google Blog, early access is available via the Gemini app for Ultra-tier users, positioning Deep Think as a premium capability that could increase subscription ARPU and differentiate Google’s AI stack for enterprise and prosumer segments. According to the Google Blog, Deep Think emphasizes chain-of-thought style planning outputs while maintaining safety controls, which may improve reliability for workflows like RFP drafting, data pipeline debugging, and product requirement synthesis. As reported by @demishassabis, the rollout is immediate for eligible users, creating near-term opportunities for app developers to test longer-context agents, for enterprises to pilot structured reasoning assistants in regulated processes, and for creators to streamline research-to-draft pipelines within the Gemini ecosystem.

According to Sundar Pichai, Google is making a version of Deep Think—an AI system that achieved gold-medal status at the International Mathematical Olympiad (IMO)—available to Ultra subscribers of the Gemini app, while the official version is now being used by professional mathematicians (source: @sundarpichai, Twitter, August 1, 2025). This move allows Gemini Ultra users to leverage cutting-edge AI for complex scientific reasoning and advanced coding challenges, highlighting practical business applications for industries requiring high-level analytical and problem-solving capabilities. The deployment of Deep Think is set to enhance productivity in scientific research, STEM education, and tech innovation, opening new market opportunities for AI-powered problem-solving tools.