Comparison of Korean GEO Agencies and Solutions (2026): Who Should You Entrust GEO Marketing To?

We compared Korean GEO agencies and solutions that support AI search optimization across ChatGPT, Perplexity, Gemini, and more by category. You can review the differences and selection criteria across measurement SaaS, SEO consulting, content execution, and website building.

Key takeaways from this article

Even among “Korean GEO agencies,” the services they actually provide differ. Some solutions only measure visibility in AI answers, while others operate everything from researching customer questions to site edits, content production, performance re-measurement, and iterative improvement.

So before the agency name, the first thing to confirm is how far they go across measurement, diagnosis, execution, and re-measurement.

Also, GEO isn’t a brand-new marketing tactic completely separate from SEO. Google explains that generative AI search optimization is still an extension of SEO, and it must be grounded in a site that is technically readable and content that is genuinely useful. (Google for Developers)

What is GEO marketing?

GEO stands for Generative Engine Optimization. It’s the work of getting generative AIs like ChatGPT, Perplexity, Gemini, and Claude to discover and mention your brand and content—or use them as sources—when answering users’ questions.

Traditional SEO focuses on increasing page visibility and traffic from Google or Naver search results. GEO, on the other hand, focuses on outcomes like these within AI answers:

• Is the brand mentioned as a recommended option?

• Is the official website cited as a source in the answer?

• Does it appear more often than competitors?

• Is it introduced in a positive context?

• Do users who saw the AI answer actually visit the site?

However, you shouldn’t treat GEO and SEO as separate efforts. To appear in Google’s AI Overviews and AI Mode, your pages must fundamentally be indexed by Google and eligible to appear in search results. Google recommends prioritizing existing SEO principles, technical structure, and helpful content rather than special GEO-only markup. (Google for Developers)

Comparison of 8 Korean GEO agencies and solutions

Even among GEO providers, the core focus varies—measurement SaaS, content production, SEO consulting, website building, brand strategy, and more. Actual scope can vary by pricing plan and contract terms, so you should separately confirm the diagnosis and execution scope before signing.

1. Villion

Villion is an end-to-end GEO/AEO solution that finds the questions customers ask AIs using data, measures how the brand appears in AI answers, and then improves the website and content.

On its official site, it explains that it connects diagnosis, planning, execution, measurement, and iterative improvement into a single operational flow. Rather than stopping at showing AI visibility status, it emphasizes an execution-oriented structure that applies measured results to the actual website and content. (villion.io)

Items to check

• Whether the contract scope includes site code changes

• The scope of content production and external-channel work

• Whether it provides the full text of AI answers by question

• Whether it measures visits and conversions after AI exposure

• Whether implementation is applied after client approval

May be a good fit for

• Companies that want to go beyond measuring AI answer exposure and actually improve their website and content

• Companies that want to research what questions customers ask AIs in the first place

• Companies that want to review exposure changes across ChatGPT, Gemini, and Perplexity together with site-visit performance

• Companies aiming to operate GEO continuously by repeating diagnosis, execution, and re-measurement

2. Elifunt Company

Elifunt Company is a content-growth consulting firm that operates websites, content, SEO, and GEO together, mainly for B2B companies.

On its official website, it explains that it provides website renewal, SEO/GEO consulting, content production, and a performance dashboard. For GEO consulting, it introduces an approach that defines brand entities so that AI search engines recognize the brand consistently, and improves the website and content structure. (elifunt.kr)

It also emphasizes the ability to translate customers’ search intent and brand messages into content, making it a type of option companies can consider if they want to pursue B2B brand strategy, website revamp, and content operations—beyond simple AI exposure measurement. It separately discloses content planning and website-building services specialized for SEO/GEO. (elifunt.kr)

Items to check

• How it repeatedly measures exposure across ChatGPT, Gemini, Perplexity, etc.

• Whether the client can review the measured questions and the full text of AI answers

• Whether it includes content production and website implementation after brand strategy

• Whether technical improvements are possible while keeping the existing website

• Whether it directly implements structured data and technical SEO, or only provides guidelines

• Which metrics are available in the performance dashboard

• Whether you can download content and measurement data after the contract ends

May be a good fit for

• Companies that need to explain B2B products and services in a way customers can easily understand

• Companies that want to pursue website renewal and SEO/GEO together

• Companies that need brand messaging and content strategy in addition to technical improvements

• Companies aiming to increase organic search and inbound inquiries over the long term rather than ads

3. Bluedot Intelligence

Bluedot Intelligence is a GEO SaaS and consulting platform that analyzes AI search visibility and citation rates.

On its official website, it measures brand visibility and citation rates across multiple AI answer engines, including ChatGPT, Google AI features, Claude, and Perplexity. Depending on the plan, it also provides GEO content generation and customized strategy reports, and states that it can support technical implementation and content production via separate consulting. (Bluedot Blog)

Items to check

• Number of questions trackable by pricing plan

• Supported AI services and measurement cadence

• How many times the same question is re-measured

• Which CMSs the generated content can be published to

• Whether technical improvements are guidance-only or actually implemented

May be a good fit for

• Companies that want to see how often their brand is mentioned across AI services via a dashboard

• Companies that want to continuously track brand visibility and citation rates compared with competitors

• Companies with an in-house marketing team that can improve content internally based on analysis results

• Companies that want to adopt SaaS first and add consulting/execution support as needed

4. Next-T OPTIGEO

Next-T provides both traditional SEO consulting and GEO services, and operates an automation platform called OPTIGEO.

OPTIGEO publicly describes an automated workflow that connects AI answer analysis to content generation, structuring, and publishing to WordPress and its own blog. It’s a type of option companies can consider if they want to increase content production and publishing speed. (OptiGEO)

Items to check

• Human review process for automatically generated content

• Whether it can auto-publish to an existing website

• Scope of technical SEO fixes

• How it connects content to changes in AI citations

• Ownership and portability of automatically published content

May be a good fit for

• Companies that need to produce and publish a lot of SEO/GEO content quickly

• Companies running WordPress or their own blog and wanting to automate content publishing

• Companies that want to handle AI question analysis through content generation and structuring in one platform

• Companies looking to reduce repetitive work for the content team and increase production speed

5. BizSpring GEOcare.ai

BizSpring provides GEO consulting along with its SaaS platform, GEOcare.ai.

GEOcare.ai measures how often the brand is mentioned in AI answers, analyzes website source code and content structure, and presents improvement items. It also states that if you choose a separate execution service, it provides technical implementation by its engineering team and content planning as well. (geocare.ai)

Items to check

• Difference in scope between SaaS usage and consulting

• How customer reviews and internal data are integrated

• Who executes the proposed action plan

• Whether site implementation incurs an additional cost

• How GEO data connects to existing analytics solutions

May be a good fit for

• Companies that want to manage AI brand exposure alongside existing website analytics data

• Companies that want a diagnosis first to identify issues in the site’s technical structure and content

• Companies that want to review status in SaaS and then add execution services as needed

• Companies trying to connect GEO with an existing digital analytics or data-driven marketing system

6. 238LAB

238LAB is an integrated consulting firm that expands from SEO into GEO.

For its LLM Audit, it states that it analyzes brand mentions and source citations across ChatGPT, Claude, Gemini, Perplexity, Grok, Google AI Overview, and Naver AI Summaries. A key characteristic is diagnosing technical SEO, content, entities, and external signals together. (238lab.kr)

Items to check

• Whether it provides actual execution and development support after diagnosis

• Which measurement questions are provided and how many repetitions are included

• Coverage for global SEO and Korean search engines

• What work the internal team must do after the report

• Whether the client can verify the raw measurement data

May be a good fit for

• Companies that want to diagnose their existing SEO status and AI search exposure together

• Companies that want broad coverage across not only ChatGPT but also Claude, Gemini, Perplexity, Grok, and Google AI features

• Companies that want a comprehensive check of technical factors, content, entities, and external signals before executing improvements

• Companies with in-house development and content teams that can implement improvements based on the diagnostic report

7. LogAgency

LogAgency provides GEO services based on its capabilities in technical SEO and website building.

On its official website, it introduces work such as designing site structure from a GEO perspective and building a citation foundation for ChatGPT, Claude, Gemini, Perplexity, and more. It’s a type of option that companies looking to improve websites for technical B2B firms or manufacturing can review. (LogAgency (LogAgency))

Items to check

• Whether improvements are possible while keeping the existing site

• Coverage for multilingual pages and country-specific search

• Cost separation between technical improvements and content production

• Whether it has a system to repeatedly measure AI answers

• Maintenance terms after the website build

May be a good fit for

• Companies that need to comprehensively improve an old homepage or a site that search engines struggle to read

• Companies that must present product and technical information structurally—such as manufacturers, tech firms, and B2B companies

• Companies that need website building and technical-structure improvement before adopting GEO measurement tools

• Companies looking to organize complex site structures such as multilingual sites, product pages, and technical resources

8. GPTO

GPTO is an AI answer optimization service that designs target questions, regularly monitors major generative AI answers, and distributes content across external channels.

On its official site, it introduces an operating model that monitors major LLMs in global and Greater China markets weekly and distributes brand-related content using external channels. This is a type of option companies can consider if they want to operate AI answer monitoring and external information distribution together rather than focusing on on-site improvements. (GPTO)

Items to check

• Data basis for selecting target questions

• Number of repeated measurements per platform

• Types and quality of channels where external content is published

• Whether the client can review posts before publication

• Scope of content accumulated on the company’s official site

• How external posts and data are handled after the contract ends

May be a good fit for

• Companies that want to manage brand exposure not only in Korea but also across overseas and Greater China AI services

• Companies that want to spread brand-related content on external channels alongside improving their own website

• Companies that want weekly monitoring of how the brand is answered for specific questions

• Companies that must build awareness across multiple languages and regions—such as global expansion, tourism, consumer goods, and global brands

Which type is right for our company?

If you have both an in-house marketing team and a dev team

It can be efficient to adopt a measurement SaaS or diagnostic solution and execute the resulting tasks internally.

In this case, check the following:

• Can you add questions yourself?

• Can you view the full text of AI answers?

• Can you download the data as files?

• Can you compare competitors and time-based changes?

• Can you convert diagnostic results into a development task list?

If you have a marketing team but lack development resources

An end-to-end provider that offers not only diagnosis but also site edits and content production is a better fit.

You can consider a type like Villion that connects measurement to on-site execution and re-measurement, or a type like Elifunt Company that provides websites and B2B content strategy together. However, you should confirm separately whether actual development and content production are included in the base contract. (villion.io)

If your website itself has major issues

Technical SEO and improving site structure should come before AI exposure measurement.

Google states that existing SEO best practices remain important in AI Overviews and AI Mode, and that pages must be indexed by Google and eligible to appear in search results to be shown as supporting links. (Google for Developers)

So if your website isn’t being read properly by search engines, it’s better to start with technical diagnosis and site improvements before adopting a dashboard.

If you need B2B brand and content strategy

Technical search optimization alone may not be enough to clearly communicate the value of complex B2B products and services.

In that case, you need a provider that organizes which customer problems, industries, and buying situations your brand should be associated with—and reflects that in your website and content. Elifunt Company is closer to this type, as its official services present B2B content, website building, and SEO/GEO consulting together.

Frequently asked questions

How many GEO agencies are there in Korea?

There is currently no official list or certification system that counts Korean GEO agencies.

SEO firms, ad agencies, web agencies, content marketing firms, and SaaS companies are rapidly adding GEO services, so it’s difficult to state an exact total number.

In this article, we summarized the following 8 agencies and solutions whose official websites disclose GEO or AEO service scope in relatively specific terms.

Villion, Elifunt Company, Bluedot Intelligence, Next-T OPTIGEO, BizSpring GEOcare.ai, 238LAB, LogAgency, GPTO

Can we entrust GEO to our existing SEO agency?

Yes. Google’s generative AI search features are based on existing search indexing and search quality systems, and fundamental SEO best practices remain important. However, you should confirm whether it’s merely rebranding existing SEO work with the name “GEO.” (Google for Developers)

It’s a good idea to check whether they can repeatedly measure AI answers, track brand mentions and cited sources, and ensure measurement results translate into actual improvements to the site and content.

Which is better: GEO SaaS or an agency?

It depends on your internal execution capacity.

If you have staff who can directly edit the site and produce content, using SaaS to internalize measurement and diagnosis can be efficient.

On the other hand, if you lack developers and content resources—or need a website overhaul—then an end-to-end or consulting provider that offers diagnosis through execution and re-measurement is a better fit.