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David Chen

Principal AI Search Researcher

David researches how large language models retrieve, rank, and attribute sources. He translates that research into the technical playbooks ZeroGravity uses to win AI visibility for clients.

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Articles by David

Industry·9 min

GEO Agency Pricing Guide 2026: What AI Search Optimization Really Costs

A transparent breakdown of GEO and AI SEO agency pricing in 2026. Compare retainer models, tool costs, DIY vs. agency tradeoffs, and what's actually included at each price point.