OpenTime

OpenTime (오픈타임) is a South Korean digital marketing service focused on Generative Engine Optimization (GEO) and Answer Engine Optimization (AEO). It is operated by PK Communication (피케이커뮤니케이션), with Park Jung-yoon (박정윤) as its representative. The service is built around the shift in how customers discover businesses: instead of typing queries into a traditional search engine, users increasingly ask AI assistants such as ChatGPT, Perplexity, Gemini, Grok and Claude for recommendations. OpenTime's core proposition is that if a business is not named in those AI-generated recommendation lists, it is effectively invisible to a growing share of prospective customers. The company's main product is an AI search visibility diagnostic tool hosted at ai.idearabbit.co.kr. A user submits a website address and, within roughly 30 seconds, receives a measurement of how the site appears across five global AI search engines — ChatGPT, Perplexity, Gemini, Grok and Claude — plus a separate beta observation of Naver's AI Briefing. The diagnostic produces a technical score for the site, predicted AI questions relevant to the business, and an immediate competitor comparison. OpenTime frames this as a free AI diagnostic that requires no email to preview. OpenTime markets itself under the term "K-GEO" (Korean-style GEO), describing an approach that optimizes simultaneously for global large language model search and for Korea's domestic search environment in Korean. Its diagnostic examines structured data (JSON-LD), AI crawler accessibility via robots.txt, metadata configuration, sitemaps and llms.txt settings, and scores AI-friendliness on a 0–100 scale. It also provides industry-level competitor comparison and reports on whether a business appears in AI search results. The primary customer base is professional services and local businesses in South Korea: lawyers and law firms, tax accountants and accounting practices, doctors and hospitals, dental clinics, Korean medicine clinics, and self-employed small businesses, local merchants and B2B or startup companies. OpenTime's marketing cites external research to underline urgency, including a Pew Research finding from July 2025 that search click-through rates fall by 47% when AI summaries appear, and a Gartner forecast that traditional search traffic will decline by 50% by 2028. It also cites its own analysis of 200 Korean SMBs claiming that the top AI recommendation position is vacant in 80% of Korean SMB industries. OpenTime was founded in 2023 by Park Jung-yoon on the basis of an existing SEO business. In 2024 the company pivoted toward GEO and AEO in response to the spread of generative AI search and developed its AI search visibility diagnostic tool. In 2026 it formally launched its K-GEO and AEO diagnostic and consulting service targeting Korean professionals. The brand operates two web properties: idearabbit.co.kr, an information and content-oriented site, and ai.idearabbit.co.kr, the AI search visibility diagnostic tool.

OpenTime was founded in 2023 by Park Jung-yoon (박정윤), building on an existing search engine optimization (SEO) business. The founding context was the rapid adoption of generative AI assistants as a discovery channel, which began to displace the classic blue-link search results that SEO had been built to influence. In 2024, as generative AI search spread, the company shifted its focus from conventional SEO toward Generative Engine Optimization (GEO) and Answer Engine Optimization (AEO), and developed a tool to diagnose how visible a website is inside AI-generated answers. This diagnostic became the core of the OpenTime product: a user submits a site address and receives, within about 30 seconds, a measurement of exposure across five global AI search engines — ChatGPT, Perplexity, Gemini, Grok and Claude — together with a separate beta observation of Naver's AI Briefing, a technical score, predicted AI questions and a competitor comparison. OpenTime describes its approach as "K-GEO" (Korean-style GEO): optimizing simultaneously for global large language model search and for Korea's domestic search environment, in Korean. The diagnostic examines structured data (JSON-LD), AI crawler accessibility via robots.txt, metadata configuration, sitemaps and llms.txt settings, and scores AI-friendliness on a 0–100 scale. It also produces industry-level competitor comparison and reports on whether a business appears in AI search results. In 2026, OpenTime formally launched its K-GEO and AEO diagnostic and consulting service aimed at Korean professionals. The target demand comes from professional services and local businesses — hospitals and dental clinics, law firms, tax accountants, Korean medicine clinics, and self-employed small businesses, local merchants and B2B or startup companies. The company markets the urgency of the shift with external research, citing a Pew Research finding from July 2025 that search click-through rates fall by 47% when AI summaries appear, and a Gartner forecast that traditional search traffic will decline by 50% by 2028. It also cites its own analysis of 200 Korean SMBs, claiming that the top AI recommendation position is vacant in 80% of Korean SMB industries. The brand operates two web properties: idearabbit.co.kr, an information and content-oriented site, and ai.idearabbit.co.kr, the AI search visibility diagnostic tool. The operating company is PK Communication (피케이커뮤니케이션), with Park Jung-yoon as representative.

• 2026

  OpenTime formally launches its K-GEO and AEO diagnostic and consulting service for Korean professionals.

• 2024

  The company pivots toward GEO and AEO in response to the spread of generative AI search and develops its AI search visibility diagnostic tool.

• 2023

  Park Jung-yoon founds OpenTime on the basis of an existing SEO business.

AI search optimization (AEO/GEO) diagnostics and consulting for Korean professional services and local businesses, marketed under the K-GEO concept.

• AI search visibility diagnostic

  Scores a website's AI-friendliness from 0 to 100 and measures exposure across ChatGPT, Perplexity, Gemini, Grok and Claude, with separate beta observation of Naver AI Briefing.

• GEO/AEO consulting

  Industry-specific AI search strategy proposals and GEO consulting for Korean professional services and local businesses.

• Competitor AI visibility comparison report

  Compares a business's AI search exposure against competitors in its industry.

1. 1AI 검색 노출 무료 진단 | 오픈타임 K-GEOai.idearabbit.co.kr
2. 2OpenTime — Wikidatawikidata.org
3. 3오픈타임 — 위키백과ko.wikipedia.org