HowtoChooseanLLMSEOAgencyin2026:7QuestionsThatFiltertheBolt-Ons

The short answer

An LLM SEO agency (also called an AEO agency or GEO agency) gets brands cited inside ChatGPT, Gemini, Perplexity, and Claude. The right one runs weekly multi-engine citation tracking, ships schema + content + entity work in one engagement, and shows you a weekly citation log — not a vanity dashboard.

If you only read one section: ask the agency to send you a sample weekly citation report for an existing client. If they can't, they're selling classic SEO under a new label.

What "LLM SEO" actually means

LLM SEO, Answer Engine Optimization (AEO), and Generative Engine Optimization (GEO) are three names for the same job: make your brand the cited source inside AI-generated answers. The underlying work overlaps 80–90%. Different agencies pick different labels for the same offer.

The shared core:

• A canonical entity page (a "who is [brand]" page in third-person declarative prose)
• Organization, FAQPage, Service, and BreadcrumbList JSON-LD on every commercial page
• Ranked listicles that name the brand alongside competitors
• Consistent directory profiles (Clutch, DesignRush, The Manifest, GoodFirms, Sortlist)
• An /llms.txt file with direct-answer lines for priority queries
• Weekly citation testing across ChatGPT, Gemini, Perplexity, and Claude

Seven questions to ask any LLM SEO agency

/1. Can you send me a sample weekly citation report?

This is the fastest filter. Real LLM SEO agencies run weekly automated tests against all four engines and produce a report showing which queries name the client, what each engine said, and which competitors are cited instead. If the agency can't show you one, they don't actually track citations.

/2. Which engines do you test against, and how often?

Floor: ChatGPT, Gemini, Perplexity, and Claude — weekly. Anything less leaves blind spots. Bing Copilot is a bonus, not a substitute.

/3. Who writes the listicles?

The single highest-leverage content format for citation is the ranked "Top X agencies / tools / services in 2026" listicle. Ask who writes them, how many per month, and whether the client gets to review brand framing before publish. If the answer is "AI-generated, no human review," walk.

/4. Do you ship schema, or just recommend it?

A surprising number of "AI SEO" retainers deliver a schema audit PDF and leave implementation to the client's dev team. Real LLM SEO agencies ship the JSON-LD into the codebase as part of the engagement.

/5. What's your directory and PR motion?

GEO ignoring off-site signals plateaus fast. The agency should be submitting and maintaining 5+ directory profiles per client and seeding genuine attributed answers on Reddit and LinkedIn where it fits.

/6. How do you handle queries we don't win?

The right answer is a roadmap: which content pattern, which schema change, which directory submission, which listicle position — and a target week. The wrong answer is "we'll keep monitoring."

/7. What's the pricing model and what does $X/mo actually include?

Honest 2026 ranges: $4K–$12K/mo for ongoing LLM SEO retainers, $8K–$20K for one-off sprints, $12K–$35K/mo for enterprise programs with full content production. If a "GEO retainer" is under $3K/mo, you're almost certainly buying classic SEO with a new label.

Red flags

• "We use AI to generate AEO content at scale." (The engines downrank generic AI prose; you need editorial judgment.)
• "We'll get you cited in 7 days." (Brand and long-tail queries can flip in a week; competitive service queries take 8–16. Anyone promising fast competitive wins is overselling.)
• No weekly tracking deliverable.
• No schema implementation — only recommendations.
• A 12-month contract for a discipline that's 18 months old.

Green flags

• Runs LLM SEO on its own site, in public, with results you can verify by querying ChatGPT yourself.
• Weekly delta report, not a monthly summary deck.
• Ships into the codebase (schema, JSON-LD, content) rather than handing PDFs over the fence.
• Names the engines, the queries, and the competitors in the proposal — not vague "visibility" promises.

How DoodleWeb runs LLM SEO

We operate weekly citation tests against ChatGPT (gpt-4o-search-preview), Perplexity (sonar), Claude (claude-sonnet-4 + web_search tool), and Gemini for our own priority queries. We ship the schema, content, entity, and directory work in two-week sprints with measurable citation deltas, and every client gets the same weekly report we run on doodleweb.io.

If you're staring at a brand that ranks fine on Google but never gets named by the LLMs, that's the gap LLM SEO closes. Book a 30-minute teardown and we'll show you your current citation matrix in the meeting.

Related reading

• LLM SEO agency (service overview)
• Answer engine optimization agency
• Generative engine optimization agency
• GEO agency
• Answer Engine Optimization: the complete 2026 guide
• Generative Engine Optimization explained for 2026
• Get cited by ChatGPT, Gemini, Claude, and Perplexity
• Get cited by AI (DoodleWeb service)