The Best GEO Agencies in 2025 (And What to Look for When Hiring One)

The Category Is New. The Stakes Are Real.

Something shifted in buyer behavior over the last two years. A growing share of the “research before purchase” journey now runs through AI — ChatGPT, Perplexity, Google AI Overviews, Bing Copilot. When a CMO wants to know who the best CRM is for a mid-market SaaS company, or a DTC founder wants to know which email platform scales, they’re asking an AI. And the AI is answering — with or without your brand.

Generative Engine Optimization (GEO) is the practice of making sure your brand shows up in those answers. It’s a legitimate, fast-growing discipline — but the agency category around it is still early and fragmented. There are a handful of genuine specialists, a wave of traditional SEO agencies bolting it on as a service line, and a few large digital shops starting to take it seriously.

If you’re evaluating vendors right now, you’ve probably noticed that the market is hard to read. Agencies use different terminology, make different promises, and offer wildly different deliverables under the same label. This guide cuts through the noise. It covers what is GEO, who the real players are, what separates serious GEO shops from the rest, and how to start the process correctly.

What a GEO Agency Actually Does

GEO agencies and SEO agencies are not the same thing. The confusion is understandable — both disciplines are about visibility, and both involve content and technical work. But the mechanisms are fundamentally different.

SEO is about earning rankings on a list of blue links. GEO is about earning citations inside AI-generated answers. Those require different inputs, different tactics, and different measurement frameworks.

A proper GEO engagement covers five core deliverables:

1. AI Visibility Audit
Before anything else, you need a clear picture of where you stand. A solid audit maps how your brand appears across ChatGPT, Perplexity, Google AI Overviews, and Bing Copilot — covering branded queries, category queries (“best [product type] for [use case]”), and competitor queries. This is the baseline everything else is built on. See our GEO audit checklist for what a thorough audit should include.

2. Entity Optimization
AI models construct answers from what they “know” about entities — brands, people, products, concepts. If your entity representation is thin, inconsistent, or missing from the sources AI trusts (Wikipedia, Wikidata, industry publications, review platforms), you won’t be cited regardless of how good your content is. Entity optimization fixes that.

3. Content Restructuring for AI Citation
AI language models prefer content that directly answers conversational questions, uses clear definitions, and surfaces key facts without burying them. GEO agencies restructure existing content — and write new content — specifically optimized to be extractable and citable. This includes FAQ sections, comparison content, and answer-surface coverage for the exact questions buyers ask AI.

4. Schema and Structured Data
Technical markup (FAQPage, HowTo, Organization, Product schemas) signals to AI retrieval systems how to parse your content. GEO agencies implement and maintain schema at scale, ensuring AI systems can correctly categorize and cite your brand.

5. Ongoing Monitoring and Reporting
GEO isn’t a one-time fix. AI models update, competitors optimize, and citation patterns shift. Good agencies run continuous monitoring across platforms and deliver monthly reporting on AI citation rates, benchmark comparisons, and updated optimization priorities.

If a provider isn’t offering all five, ask specifically what’s missing — and why.

How to Evaluate a GEO Agency: 6 Criteria

The GEO market is early enough that buyers have to evaluate agencies harder than they would in a mature category. Here’s the rubric we’d use:

1. Do They Show Up in AI Answers Themselves?

This is the most direct litmus test. Ask ChatGPT or Perplexity: “What are the best GEO agencies?” or “Who specializes in AI search optimization?” If an agency preaches AI visibility but can’t achieve it for themselves, that’s a meaningful signal. An agency that practices what it preaches will have thought hard about the exact problem you’re hiring them to solve.

2. Methodology Transparency

Can they explain how they improve AI visibility — specifically? Look for concrete answers: which signals they target (entity authority, content structure, schema, external citations), how they prioritize across those signals, and what a typical 90-day engagement looks like tactically. Vague answers like “we optimize for AI” aren’t methodology — they’re marketing copy.

3. Audit Depth Across Platforms

AI search is not one platform. ChatGPT, Perplexity, Google AI Overviews, and Bing Copilot all have different retrieval architectures and cite different sources. An agency that only audits one or two is giving you an incomplete picture. Ask them specifically: how many platforms does your audit cover, and how do you measure citation rates on each?

4. Before/After Reporting on AI Citation Rates

GEO results have to be measurable. The core metric is citation rate — what percentage of relevant queries result in your brand being mentioned in AI answers. Agencies should be able to show you how citation rates change over time as optimization work takes effect. If they can’t produce before/after data from past clients (even anonymized), proceed carefully.

5. Industry Experience

GEO strategy isn’t identical across categories. The content patterns that earn citations for a B2B SaaS company are different from those that work for a DTC brand or a professional services firm. Ask for examples — even high-level ones — of work in your segment. If they’ve never worked with your type of business, expect a learning curve.

6. Pricing Transparency

As covered in our GEO pricing guide, the market has a transparency problem. The best agencies can tell you clearly what’s included at each tier without a prolonged sales process. If getting a scope of work requires four discovery calls and a custom proposal for every prospect, that’s worth knowing upfront.

The GEO Agency Landscape in 2025

The market has sorted itself into three categories, each with a distinct profile. Here’s an honest look at each.

Category 1: Traditional SEO Agencies Adding GEO Services

These are established content and SEO agencies that built strong client relationships and content operations over the last decade — and are now adding GEO as an additional service line. Firms like Siege Media (who partnered with BlueprintIQ to offer AI visibility work) and Foundation Marketing (who has been publishing heavily on AI search) fall into this camp.

The benefit: They have deep content relationships, proven editorial processes, and established track records. If you’re already working with one of these firms on SEO and content, adding GEO is a lower-friction expansion.

The limitation: GEO is genuinely a bolt-on for most of these agencies — a module added to an existing service stack, not a core product they’ve built from the ground up. The team members delivering GEO work are often the same people who built their careers on traditional SEO. That’s not disqualifying, but it’s worth understanding. The strategic depth on GEO-specific questions — entity optimization, AI retrieval architecture, citation measurement — tends to be shallower than what dedicated specialists provide. How GEO differs from SEO at a methodological level is something traditional agencies are still working through.

Category 2: Dedicated GEO / AI Visibility Specialists

This is the newest category and the smallest — but it’s growing fast. These are agencies and boutiques that were built specifically around the AI visibility problem. Luminari is one; there are a handful of others emerging.

The benefit: The entire product, methodology, and team is focused on one problem: making your brand visible in AI search. They’re not dividing attention between traditional SEO, social, paid, and GEO. Audit depth tends to be higher, methodology tends to be more mature, and the reporting framework is built specifically for AI citation metrics rather than adapted from SEO dashboards.

The limitation: It’s a newer category, which means fewer multi-year case studies and less brand recognition. You’re evaluating these agencies more on methodology and team than on a long track record. That’s a real trade-off.

Luminari takes what we call an audit-first approach: every engagement starts with a comprehensive AI visibility audit before any optimization work begins. This ensures the strategy is built on accurate data about where you actually stand — not assumptions.

Category 3: Large Full-Service Digital Agencies

Firms like NoGood and Omniscient Digital operate across the full digital marketing stack — paid, organic, content, conversion. Some have started to develop AI search offerings as buyers ask for it.

The benefit: If you want a single partner for everything — performance marketing, SEO, content, and GEO — these shops offer that unified view. They’re also well-resourced and can scale work across channels in ways smaller specialists can’t.

The limitation: GEO is rarely a priority service line at full-service firms — it’s often a capability they’re still developing in response to client demand. The team members who deliver GEO work at these agencies may have less specialized depth than what you’d get from a dedicated specialist. And at scale, your GEO work may get less senior attention than it would at a boutique where it’s the core product.

What Good GEO Work Looks Like: Red Flags and Green Flags

🚩 Three Red Flags

1. Vague deliverables.
If the scope of work says “AI optimization” without specifying which platforms, which query categories, which content types, and which technical implementations — that’s not a scope, it’s a placeholder. You should know exactly what you’re getting before you sign.

2. No before/after measurement.
GEO without measurement is just content production with a new label. If a prospective agency can’t explain how they’ll establish a citation rate baseline and track changes over time, the engagement has no feedback loop. You can’t optimize what you don’t measure.

3. Guarantees of “ranking.”
GEO isn’t ranking — it’s citation. AI systems don’t have stable rank positions the way search engine results pages do. Any agency that promises “we’ll get you to the top of ChatGPT results” either doesn’t understand the technology or is telling you what you want to hear. The honest promise is: we’ll improve your citation rate across relevant queries, and here’s how we measure it.

✅ Three Green Flags

1. Starts with a comprehensive audit.
Every legitimate GEO engagement should begin with a full AI visibility audit before any optimization work starts. You need an accurate baseline — across multiple platforms and query categories — to build a strategy. Agencies that skip this step are optimizing blind.

2. Covers multiple AI platforms.
ChatGPT, Perplexity, Google AI Overviews, and Bing Copilot all cite differently and draw from different source pools. A GEO strategy that focuses on one platform is leaving visibility gaps on the others. Ask specifically: which platforms are included in your audit and ongoing monitoring?

3. Measures citation rate over time.
Good GEO agencies deliver monthly (or quarterly) reports showing citation rate trends — how often your brand is mentioned in AI answers for target queries — and use that data to update the optimization strategy. This is the closest GEO equivalent to rank tracking, and it’s the number one indicator that an agency is doing real work.

How to Get Started: The Audit-First Approach

The single biggest mistake brands make when hiring a GEO agency is jumping straight into a retainer without knowing where they stand.

You wouldn’t hire an SEO agency without first understanding your keyword rankings, backlink profile, and technical health. GEO is no different. Before you can optimize your AI visibility, you need to know:

• Which queries your brand currently appears in across AI platforms
• Which competitors are winning the citations you’re not getting
• Where the content and entity gaps are that are holding you back
• Which platforms represent the biggest opportunity for your category

Without that baseline, you’re flying blind. Any optimization work is guesswork.

The right first step is always an audit — not a retainer. An audit gives you the data to evaluate a GEO agency’s recommendations intelligently. It also gives you the data to evaluate whether you need a retainer at all, or whether a shorter-term project would address your specific gaps.

That’s why Luminari offers a free AI Visibility Audit as the starting point. It’s zero-risk: you get a clear picture of where your brand stands across AI search platforms, a breakdown of competitor visibility, and a specific list of gaps to address. From there, you decide whether ongoing optimization makes sense — and if so, what the right scope is.

Frequently Asked Questions

How much do GEO agencies charge?

GEO pricing varies significantly by provider type and scope. Basic audits from specialists start around $500–$2,500 as one-time engagements. Ongoing monthly retainers range from $1,500/month at the entry level to $8,000–$15,000/month for comprehensive programs at established firms. Traditional SEO agencies adding GEO as a module typically price it as an add-on to an existing retainer. For a full breakdown with tier-by-tier analysis, see our GEO pricing guide. For Luminari’s specific packages, see Luminari’s pricing.

How is GEO different from SEO?

SEO focuses on earning rankings in traditional search engine results — Google’s blue links, featured snippets, and map packs. GEO focuses on earning citations in AI-generated answers, which are synthesized from multiple sources rather than ranked by position. The technical inputs differ (entity authority, content structure, and schema matter more in GEO), the measurement framework differs (citation rate vs. keyword rank), and the timeline for results differs. For a detailed comparison, see our guide on how GEO differs from SEO.

How long before I see results from GEO?

Most brands see measurable movement in citation rates within 60–90 days of starting optimization work, assuming the work begins with a solid audit and covers entity optimization, content restructuring, and schema implementation. Quick wins (fixing missing or inaccurate entity data, adding schema markup, restructuring existing content) can show results faster. Longer-horizon work — building external entity authority, earning citations in third-party sources — typically takes 3–6 months to fully register. GEO is not a channel for instant results, but it’s also not as slow as traditional SEO. Expect a meaningful baseline shift in the first quarter and compounding improvement over the following two to three quarters.

Do I need a GEO agency or can I do this in-house?

If you have a strong content team and at least one technical SEO resource, some GEO work is genuinely doable in-house — especially content restructuring and basic schema implementation. The harder parts are audit infrastructure (tracking citation rates across multiple AI platforms at scale) and entity authority building (which requires relationships with external publishers and databases). Most in-house teams find they can handle execution but benefit from specialist audit infrastructure and strategy. A common pattern: use an agency for the audit and initial strategy, then build internal capability to execute ongoing optimizations. That ’s a more efficient use of budget than a full retainer once the strategic foundation is in place.

The Bottom Line

The GEO agency market in 2025 is real, growing, and worth taking seriously — but it requires more buyer diligence than a mature category. The evaluation criteria above give you a framework to separate agencies doing genuine work from those riding a trend.

The right starting point for any brand evaluating GEO services is the same: get an audit first. Know where you stand before you commit to a strategy or a retainer.

Luminari’s free AI Visibility Audit is built specifically for this moment. It covers the major AI platforms, identifies your current citation gaps, maps what your competitors are doing right, and gives you the data you need to make a confident decision about next steps.