In San Francisco, AI marketing agency services generally run 15-30% higher than the national average due to the city's high operational costs and specialized tech talent. Expect monthly retainers starting around $7,500-$10,000 for small businesses, while enterprise-level AI marketing campaigns can range from $15,000-$30,000+ monthly. Many San Francisco agencies offer tiered pricing models, with most local clients falling in the $10,000-$20,000 monthly range. While these rates are higher than in other markets, San Francisco agencies typically deliver greater value through their proximity to Silicon Valley talent, deeper understanding of tech-focused audiences, and experience working with innovative Bay Area companies. When comparing costs, focus on ROI potential rather than just the monthly investment.