Korea AI Visibility Tools Compared: SOHA, OPTIGEO, ChainShift, RanketAI 2026

The market for tracking brand exposure inside AI-generated answers is splintering fast. By 2026, more than 30 AI visibility tools compete globally^[1], and four products have staked out distinct positions in the Korean market: SOHA, OPTIGEO, ChainShift, and RanketAI. They diverge in engine coverage, support for domestic platforms (Naver AI Overview, Naver AI Briefing), and how far they extend from measurement into diagnosis and execution. This article benchmarks all five, including BOIDA (BVI), on the same criteria and surfaces the differences companies tend to overlook when choosing a tool.

30-Second Definitions: Five Tools

SOHA is an AI Citation Analysis platform operated by LeadGenLab (CEO Lee Hyo-seok). It periodically tracks brand citations and mentions across five engines, ChatGPT, Perplexity, Google AI Overview, Naver AI Overview, and Naver AI Briefing, and reports AI visibility metrics as a SaaS product.^[6]

OPTIGEO is a GEO execution platform from Next-T (founded 2015, CEO Hong Eun-pyo). It analyzes five to six AI engines, ChatGPT, Perplexity, Gemini, Google AI Mode, Naver AI Overview, and Claude, then generates AI-optimized content and auto-publishes it through a connected pipeline.^[7]

ChainShift is a Seoul-based SaaS startup (founded 2025) that measures brand visibility, competitive Share of Voice, and citation sources across seven LLMs, ChatGPT, Gemini, Perplexity, Google AI Overview, Google AI Mode, Grok, and MS Copilot, in a single dashboard.^[4]

RanketAI is a GEO, AEO, and AAO diagnostic SaaS operated by NeoCodeLab (Lee Jeong-min), rebranded from Trensee in May 2026. It sends real prompts to ChatGPT, Perplexity, and Gemini, checks whether those responses mention the target brand, and returns page-structure diagnostic scores.^[3]

BOIDA (BVI) is an AI visibility measurement, diagnosis, and execution platform launched in December 2025 by Designovel (founded 2017, co-CEOs Shin Ki-young and Song Woo-sang). It computes a Brand Visibility Index (BVI) across major generative AI engines including ChatGPT, Claude, Gemini, and Perplexity (six total, as claimed) and connects measurement, diagnosis, and execution in one workflow.

The Three Functional Layers of AI Visibility Tools

AI visibility tools divide into three functional layers: Measure → Diagnose → Execute. The measurement layer collects brand citation and mention frequency from AI engine responses. The diagnosis layer analyzes that data to identify weaknesses in content structure, schema, and citation patterns. The execution layer converts diagnostic findings into content improvements, auto-publishing, and outbound link acquisition. All five tools cover the measurement layer, but coverage diverges sharply at diagnosis and execution. Teams with in-house execution capacity can get by with measurement plus diagnosis. Teams without it will see better returns from a platform that carries through to execution.

Feature Comparison: All Five Tools

Engines Measured per Tool

Engine coverage reflects each company's strategic bet. SOHA and OPTIGEO include Naver AI Overview and Naver AI Briefing, targeting Korea's domestic B2C and B2B market directly. ChainShift covers seven global LLMs and excludes domestic engines. BOIDA BVI adds DeepSeek and Grok, next-generation global LLMs, while also handling Korean-language queries. RanketAI concentrates on three global engines and differentiates on the transparency of its GEO, AEO, and AAO diagnostic scores.^[1]

Tool Profiles

SOHA: Domestic Engine Tracking

LeadGenLab describes SOHA as "an AI Citation Analysis platform that integrates measurement, analysis, content, and tracking."^[6] The defining differentiator is coverage of Naver AI Overview and Naver AI Briefing. For B2B services targeting domestic users, omitting these two channels leaves a real gap in AI visibility data. SOHA automatically aggregates brand citation rates, answer Share of Voice, and mention rankings on a recurring schedule; content improvement based on that data connects to LeadGenLab's agency service.

OPTIGEO: From Analysis to Auto-Publishing

Next-T's OPTIGEO links analysis, generation, and publishing in a single pipeline. OPTIANALYTICS, Next-T's GEO signal measurement layer, monitors at the page level whether ChatGPT, Perplexity, Claude, Google, and Naver are collecting and citing that content; OPTIGEO then uses those findings to generate AI-optimized content and auto-publish it to WordPress or a proprietary blog.^[7] A portfolio of 100+ link domains suggests that external signal acquisition after publishing also falls within the service scope. The structure suits teams that need results without in-house execution resources.

ChainShift: Seven-Engine Global LLM Coverage

ChainShift holds enterprise references including Amorepacific^[5] and has been selected by both Antler Korea and TIPS (Technology Innovation Program Support).^[4] Its seven-engine coverage adds Google AI Mode and MS Copilot on top of what most competitors include. A single dashboard delivers brand visibility, citation sources, and competitive benchmarking, connected to AI-optimized content recommendations. Naver AI Overview is not currently in the coverage set, so brands with a high share of domestic traffic should weigh that gap.

RanketAI: Public Pricing, GEO, AEO, AAO Diagnosis

RanketAI is the only tool in the Korean AI visibility market that operates with a tiered public pricing structure including a free plan.^[2] The product rebranded from Trensee to RanketAI in May 2026^[3] and combines GEO, AEO, and AAO three-axis diagnosis with page-structure analysis, outputting results as scores. Measurement works by sending real prompts to ChatGPT, Perplexity, and Gemini and checking whether responses mention the target brand. The low entry cost and score-based diagnostic output make it well suited for teams introducing AI visibility concepts for the first time and wanting to test a hypothesis before committing further.

BOIDA (BVI): Measurement to Execution, End-to-End

Designovel's BOIDA carries external validation signals: an ACM CHI 2026 paper presentation and NVIDIA Inception membership. Since its December 2025 launch, it has computed BVI (Brand Visibility Index) across major generative AI engines including ChatGPT, Claude, Gemini, and Perplexity (six total, as claimed) using a multi-dimensional, large-scale repeated measurement approach. Korean-language query support is included, and measurement, diagnosis, and execution are connected within a single platform. The product is available at app.boida.araas.ai.

Choosing the Right Tool

Three variables drive the selection decision. First, which engines need tracking. When a brand's user base is primarily domestic and Naver AI Overview or Naver AI Briefing measurement is required, SOHA or OPTIGEO are the only practical options. For global LLM coverage, ChainShift, BOIDA, and RanketAI compete.

Second, whether execution capacity exists in-house. A team that can take measurement data and independently handle content improvement and publishing can work well with measurement-plus-diagnosis tools. Without that capacity, a platform that carries through to execution, OPTIGEO (auto-publish) or BOIDA (end-to-end), delivers better returns.

Third, initial validation versus long-term operation. When budget or decision time is constrained, starting with RanketAI's free-to-entry tier to confirm AI visibility diagnostic potential is the most realistic first step.

Summary

The Korean AI visibility measurement market is dividing in 2026 along two lines: domestic-engine specialists (SOHA, OPTIGEO) and global-LLM-focused platforms (ChainShift, RanketAI, BOIDA). The right selection depends not on engine count alone but on whether the tool extends into diagnosis and execution, and on how much execution capacity the organization already has. Whichever tool a team adopts, keeping measurement outputs in tables and text, not images, and building a loop where measurement results feed back into concrete content improvements is what makes AI visibility investment pay off.

Related: AI Visibility Monitoring Tools Comparison, AI Visibility Tools Recommendation Korea, Multi-Engine Measurement Guide, GEO Tool Pricing Overview