OnePlan Marketing Verified Company
Founded in 2019 in Seoul, South Korea, Oneplan Marketing is a data-driven AI marketing agency specializing in AI SEO, GEO (Generative Engine Optimization), and AEO (Answer Engine Optimization). Our founding philosophy is simple: "We present the optimized plan that is exclusively yours." We believe every brand has the potential to grow — when powered by the right analysis, strategy, USP, and data.
We are one of Korea's first agencies to offer integrated GEO strategy, optimizing brand content to be cited, recommended, and referenced by generative AI engines including ChatGPT, Perplexity, Google AI Overviews, and Claude. In an era where AI-generated answers are replacing traditional search clicks, we position your brand as the trusted source AI recommends.
All Google, Naver, and Meta advertising campaigns are operated 100% in-house — no outsourcing, no subcontracting. Every strategy, execution, and optimization is handled directly by our own team, ensuring full transparency, faster decisions, and consistent performance from day one.
Core Values:
① Data-Driven — We design every strategy based on data, not assumptions. Search volume, content exposure, competitor ad spend — all diagnosed through numbers.
② USP (Unique Selling Point) — We define and communicate your brand's unique value to the right audience. No campaign starts without a clearly defined USP.
③ Performance — We target real conversions, not just clicks. Weekly and monthly transparent reports keep you informed at every stage.
Key Achievements (as of 2026):
Since our founding, we have partnered with 200+ brands across healthcare, finance, exhibitions, and e-commerce — delivering an average ad performance improvement of 20–35% and a 95% client satisfaction rate. We have managed over ₩5 billion in cumulative ad spend.
Certifications & Partnerships:
• Official Meta Business Partner (since 2022)
• Official Agency for COEX, Hanwha Life Insurance, and LG U+
• Official Partner of Marummo Research Institute — Korea's leading SEO & GEO research organization
Company History:
2019 — Founded in Dongjak-gu, Seoul
2022 — Meta Business Partner certified / ₩2B in ad spend
2023 — 100+ brand partnerships / COEX, Hanwha Life, LG U+ onboarded
2024 — 200+ brand partnerships / ₩5B in cumulative ad spend
2025–2026 — Full transition to AI SEO & GEO integrated agency
59, Solbat-ro, Dongjak-gu, Seoul, Republic of Korea
OnePlan Marketing at a Glance
Who Founded OnePlan Marketing?
How many projects a year does OnePlan Marketing deliver?
What is OnePlan Marketing average cost per project?
What are OnePlan Marketing company values?
Profile strength: Good
Good is ok, but it seems that something very important is missing on the company profile. OnePlan Marketing may be a good company to work with. It requires a little more attention and research from your side, as they might not have reviews or portfolio items just yet.. Do your due diligence before contracting OnePlan Marketing.
Locations
HEADQUARTERS
59, Solbat-ro
Seoul 07031
South Korea +82269256111
Speciality
- Digital Marketing
- SEO
- Advertising
- Marketing Strategy
- Media Planning & Buying
- Content Marketing
- Mobile Advertising
Focuses & Technologies
Client Focus
Industry Focus
- Advertising & marketing
OnePlan Marketing Stats ! You can learn more about company stats on TechBehemoths in this article.
How OnePlan Marketing compares to other companies based on profile strength?
See how OnePlan Marketing is positioned among 67 companies from South Korea based on profile strength. Their position is good and safe. Of course, a better rank could be more helpful, but worth trying to reach them.
How much does OnePlan Marketing charge for their services compared to other companies in South Korea and Seoul?
OnePlan Marketing charges between $150 - 250/hour, meaning that the cost of their services in South Korea is above the market average. Their high price range might be a result of an extended experience or high-quality work. Keep this in mind before calculating your budget and requesting a quote..
How many services does OnePlan Marketing provide compared to other companies?
OnePlan Marketing covers 4 services in their current region or area. This means that the company offers a limited range of services compared to their competitors. This is not necessarily a bad thing. It can be that the company is rather focused on a few things and does it well, instead of spreading too much.
When was OnePlan Marketing founded?
OnePlan Marketing was founded in 2019. According to TechBehemoths data, 2 companies were founded in South Korea in that year. Compared to other companies, OnePlan Marketing is relatively established in the market. This might be a sweet spot as well. They already got some experience and are still in the process of finetuning themselves, along with that extra mile that we all like.
Portfolio
Having no reviews yet might be ok to trust, but having no portfolio...it's a little risky. We highly advice to look for another company. Better safe than sorry.
Reviews
Write a ReviewEvery company has its start. These guys don't have any reviews yet, but you may give them a chance. They could excel, to make you a happy client. But, you may also consider other companies, with a proven track record too. To be safe.