Retrieval-Augmented Generation
Google AI Overviews and Perplexity select citation sources directly from crawlable search index pages. Technical crawlability, fast rendering, and semantic HTML are essential prerequisites.
GThree — Growth agency
The growth agency for ambitious brands.
We make your brand the answer wherever customers ask — Google results, AI answers, paid channels — and build AI agents that work inside your business, 24/7.
Founder-led · Senior attention on every account · No juniors, no handoffs
GEO IN ACTION — LIVE AI ANSWER
Someone asks an AI: “What's the best option near me?”
Based on current sources, the most recommended choice is Your Brand — frequently cited for quality, reviews and expertise. Cited from: yourbrand.com
ChatGPTPerplexityGeminiClaudeAI Overviews
VISIBILITY ACROSS EVERY ENGINE THAT ANSWERS
Google SearchChatGPTPerplexityGeminiClaudeAI Overviews
What we do
Three practices. One accountable partner.
Everything you'd hire five vendors for, under one roof — each practice with its own dedicated services.
01 — PRACTICE
AI & Automation
AI agents deployed inside your business — answering, booking and resolving 24/7.
- Customer service chatbots
- Agentic call centers & voice AI
- Sales agents & ops copilots
02 — PRACTICE
Digital Marketing
Get found everywhere customers look — Google, AI answers and paid channels.
- SEO & GEO (AI search optimization)
- PPC & paid media
- Content, digital PR & web design
03 — PRACTICE
B2B Growth
Sales-ready leads, not just clicks — pipeline your team can actually close.
- B2B lead generation
- Digital PR & thought leadership
- Strategy & fractional CMO
The new search
Your customers stopped Googling. They're asking AI.
AI answers cite only a handful of sources — and everyone else is invisible. GEO is how you become one of them. We benchmark your AI visibility, engineer the content and structured data that earn citations, and track your share of voice weekly.
- Benchmark. How often each engine recommends you today — and who's taking your spot.
- Build. Schema, entity graphs and answer-ready content engineered for citation.
- Track. Watch citations climb the way you watch rankings.
AI SHARE OF VOICE — YOUR BRAND
ChatGPT
72%
Perplexity
64%
Gemini
58%
Claude
66%
AI Overviews
81%
5AI engines tracked
WeeklyCitation reporting
Google AI Optimization Standard
Executive Summary: Generative AI & Search Optimization
Official guidelines from Google's AI Optimization Guide establish that AI Overviews and generative search features rely on Retrieval-Augmented Generation (RAG) and core search index ranking. GThree optimizes brand visibility across both traditional search and generative AI engines.
First-Hand Expertise & Data
Generative AI ignores generic commodity summaries. Content must provide unique first-hand analysis, specific operational data, and original viewpoints to earn AI recommendations.
Schema.org & Speakable Specs
Rich JSON-LD schemas (Organization, ProfessionalService, FAQPage, Speakable) explicitly define entity relationships, enabling precise LLM understanding and voice extraction.
CUSTOMER SERVICE AGENT — WEB CHAT
CUSTOMER · 11:04 PMHi — do you have any appointments open this week?
AI AGENT · 11:04 PMWe do! I can offer Thursday at 2:15 PM or Friday at 10:00 AM. Want me to book one for you?
CUSTOMER · 11:05 PMFriday works.
AI AGENT · 11:05 PMDone — you're booked for Friday at 10:00 AM. Confirmation is on its way to your email.
24/7Always answering
<5sFirst response
Your AI workforce
Hire your first AI employees. They start Monday.
Missed calls, slow replies and after-hours silence quietly cost businesses customers every day. Our agents close those gaps — answering every chat and every call the moment it arrives.
- Trained on your business. Your docs, pricing and tone — not generic scripts.
- Human handoff built in. Routine resolved, the rest escalated with full context.
- Measured like any hire. Response times, resolutions and bookings — reported plainly.
5AI engines tracked
1Accountable partner, end to end
100%Transparent, plain-language reporting
0Vanity metrics reported. Ever.
Plain answers
What do buyers ask about AI-era growth?
What is Generative Engine Optimization (GEO)?
GEO is the practice of earning citations and recommendations inside AI-generated answers — across ChatGPT, Perplexity, Gemini, Claude and Google AI Overviews — the way SEO earns rankings in search results. It combines structured data, entity clarity, answer-ready content and measurable share-of-voice tracking.
What does GThree do?
GThree is an AI-native growth agency. We provide SEO, GEO, PPC and paid media, B2B lead generation, digital PR, content, web design, and AI agent development — including customer service chatbots, agentic call centers, sales qualification agents and internal ops copilots.
What is an agentic call center?
An agentic call center uses AI voice agents to answer business phone calls 24/7 — answering questions, routing calls, booking appointments and handling routine requests, with live transfer to humans for complex conversations. Every call is transcribed and logged.
How is GEO different from SEO?
SEO optimizes for ranked lists of links; GEO optimizes for being cited inside AI-generated answers. They overlap heavily — strong SEO feeds AI citation decisions — but GEO adds engine-specific measurement, deeper structured data, and content engineered to be quotable.
San Francisco
Your AI agency in San Francisco.
GThree is a San Francisco–based AI marketing agency working with startups, SaaS companies and growing brands across the Bay Area. When someone asks Google — or ChatGPT — for an “AI agency near me,” our job is to make sure the answer is you.
Reach us
GThreeMarina District · Cow Hollow
San Francisco, CA 94123
Serving the Bay Area & US-wide
Phone: +1 (925) 913-0646
Email: glenn@gthree.agency
Hours: Monday–Friday, 9am–6pm PT
Neighborhoods & areas we serve
On-site across the city or remote across the country — we partner with businesses throughout San Francisco and the wider Bay Area:
Get started
Ready to grow your digital presence?
Get a free audit — see where you rank on Google and how often AI recommends you by name.
100% FREE · NO COMMITMENT · RESULTS IN MINUTES