An AEO agency optimizes a brand so AI assistants like ChatGPT, Claude, Gemini, and Perplexity cite it when someone asks a question in that category. Most AEO agencies charge $1,000 to $25,000 a month depending on scope. Work starts with an audit, and OmniGro's own pilots show early citation movement within 2 to 3 weeks. This guide covers the work, the cost, and what a first engagement should deliver.
What Does an AEO Agency Do?
An AEO agency runs four workstreams: citation monitoring across AI platforms, answer-first content production, technical implementation, and competitive benchmarking against named rivals. A real AEO agency covers all four. One that only reports on citations without producing fixes is a monitoring tool wearing an agency's pricing.
Citation monitoring tracks how often a brand appears when AI models answer category questions, and on which platform. A brand can rank well on ChatGPT and be absent on Perplexity, since each model weighs sources differently. A 2025 University of Toronto study (Chen et al., arXiv:2509.08919) found earned third-party sources made up 63.4% of Gemini's citations and 95.1% of ChatGPT's. Monitoring has to cover sources the brand does not own.
Content production rewrites and builds pages around answer-first structure: the direct answer in the first 30 to 80 words, supporting evidence immediately after each claim. This is the workstream with the widest effect, because LLMs extract disproportionately from content already formatted the way they compose their own answers.
Technical implementation covers schema markup (FAQPage, HowTo, Organization) and crawler access for GPTBot, ClaudeBot, and PerplexityBot. It also covers entity consistency across the sources an AI model reads from. According to Vercel's crawler analysis, GPTBot made 569 million requests across Vercel's network in a single month without executing JavaScript. ClaudeBot and PerplexityBot behave the same way. A page with strong writing but no server-side rendering is invisible to all three.
Competitive benchmarking shows which named competitor gets cited on which query, on which platform, and why. Without this, a brand cannot tell if a content gap or a technical gap is costing it the citation.
What Does an AEO Agency Cost?
AEO agency retainers in 2026 run from roughly $1,000 a month for entry-level monitoring to $25,000 or more for enterprise programs. According to Digital Elevator, entry-level monitoring costs $1,000 to $2,500 a month and active mid-market optimization runs $3,000 to $8,000. Enterprise category-leadership campaigns reach $10,000 to $25,000 or more. At the top end, Marketintelo puts average enterprise GEO contracts at $185,000 a year in 2025.
The gap between tiers usually comes down to scope. A $1,000 retainer that only monitors citations costs less because it does not produce fixes. A $10,000 retainer that includes content, technical work, and competitive tracking costs more because all three workstreams run every month.
OmniGro's managed service runs $2,000 to $5,000 a month and covers all four workstreams: monitoring, content, technical implementation, and competitor intelligence. That is entry-tier pricing for mid-market scope, because the work runs as one AI-agent-driven system rather than separate specialists billing for each piece.
What to Expect From an AEO Agency Engagement
A real engagement starts with a baseline audit. Skipping the audit means picking the easiest fix to act on, which is rarely the one costing the most visibility.
Week 1: audit and strategy. The agency runs prompt tests across AI platforms, scores entity accuracy and content structure, and prioritizes fixes by impact. OmniGro's Brand Visibility Audit runs 200+ structured prompts across ChatGPT, Claude, and Gemini before any content work starts.
Weeks 2 to 3: content and technical work go live. Answer-first rewrites, schema implementation, and crawler access fixes ship in parallel. This is where most of the retainer's monthly hours get spent.
Weeks 3 to 4: first citations appear. OmniGro's own pilots show first citation movement in this window.
Ongoing: reporting and iteration. A completed engagement reports citation volume, share of voice by platform, and a prioritized action list each period. It does not stop at a single visibility score with no next step attached.
The Three Squared Nine case study tracks one ten-week engagement end to end, not a single 2-to-5-week pilot. A brand absent from 11 of 15 tracked queries reached #1 across four AI engines. Organic clicks rose from 65 to 358, with no new backlinks added.
AEO Agency vs SEO Agency
An AEO agency optimizes for AI citations; an SEO agency optimizes for Google rankings. The two disciplines share techniques like structured data and authoritative content, but the target differs. SEO wins a position in a list of ten links; AEO wins the single answer an AI model gives. See AEO vs SEO: Key Differences for the full breakdown of where the two overlap and where they diverge.
SEO agencies increasingly claim AEO capability by adding it to their service list, without changing how the work actually runs. The five criteria that separate a real AEO agency from a relabeled SEO shop are covered in how to choose a generative engine optimization agency.
FAQs
Is AEO the same as GEO?
AEO (Answer Engine Optimization) is the broader category: it covers every platform that returns a direct answer, including voice assistants and Google AI Overviews. GEO (Generative Engine Optimization) is the subset aimed at large language models like ChatGPT, Claude, and Gemini. The techniques overlap almost entirely, and most agencies use the terms interchangeably. See What Is AEO (Answer Engine Optimization)? for the full definition.
How long before an AEO agency shows results?
Most engagements show early citation movement within 2 to 3 weeks of the pilot starting, with a full results report by week 5. The timeline depends on how often the target AI models re-index the sources that feed them, not just how fast the agency ships work.
Can I do AEO myself instead of hiring an agency?
A brand with in-house content and technical resources can run AEO without an agency. Citation monitoring across multiple AI platforms still requires either a paid tool or manual prompt testing on a recurring schedule. Most teams that try this in-house underestimate the technical implementation piece, since schema and crawler access work sits outside a typical content team's skill set.
What's included in an AEO audit?
A complete audit scores entity accuracy, content structure, citation signals, multi-model coverage, and technical crawler access, then returns a prioritized fix list. It runs before any content or technical work starts, since it sets the baseline everything after gets measured against.
Does an AEO agency replace my SEO agency?
No. AEO and SEO target different systems and complement each other rather than compete. A brand running both sees compounding returns, since strong content and authoritative backlinks help Google rankings and AI citations alike.
Conclusion
An AEO agency's value comes from running monitoring, content, technical work, and competitive tracking as one system, not from any single workstream alone. Get a free AI visibility assessment to see where your brand stands before committing budget.