Google Gemini Usage Jumps 137% on Mobile, 648% on Desktop
Google Gemini attracted 12.8 million mobile unique visitors in December 2025 (+137% YoY) and 12.3 million on desktop (+648% YoY), making it the second-largest AI assistant after ChatGPT. Sustained growth could accelerate AI-driven revenue from Alphabet’s cloud and advertising businesses.
1. California AI Regulations Elevate Transparency for Alphabet
On January 1, 2026, California Assembly Bill 316 took effect, imposing stringent requirements on ‘frontier’ AI companies to implement documented risk mitigation processes and publicly disclose detailed safety assessments. As a major developer of advanced language models and custom TPUs, Alphabet must now publish transparency reports outlining system capabilities, known vulnerabilities and mitigation strategies. The law also bars AI firms from invoking autonomous decision-making as a defense in liability suits, increasing Alphabet’s exposure to potential litigation but offering investors clearer insight into its compliance posture and risk profile.
2. Alphabet Poised to Capture $1.4 Trillion in AI Infrastructure Spending
With global AI infrastructure investment forecast at $1.4 trillion in 2026, Alphabet’s in-house Tensor Processing Units have secured multi-year contracts with Anthropic and are in advanced negotiations with Meta. Industry analysts project Alphabet’s data center revenue tied to AI compute could grow by 25% year-over-year, translating into double-digit earnings growth. These custom chips not only lower operational costs by an estimated 20% versus off-the-shelf alternatives, but also solidify long-term customer commitments, positioning Alphabet as a critical supplier in the next wave of AI deployments.
3. Google Gemini Usage Accelerates as Mobile Becomes Primary AI Interface
Comscore data for December 2025 shows mobile visitation to Google Gemini reached 12.8 million unique users, up 137% year-over-year, while desktop visitation soared 648% to 12.3 million. This rapid adoption positions Gemini as the fastest-growing major AI assistant on both platforms. By comparison, Alphabet’s share of overall AI assistant traffic jumped from 5% to 15% in 12 months. Investors view these engagement metrics as a leading indicator of future monetization through search integration, advertising and enterprise licensing, underpinning Alphabet’s strategic focus on embedding AI across its core products.