ESTsoft - Korea's leading conversational AI and virtual human platform

What Is ESTsoft

If you've been exploring AI solutions for your business, you've probably encountered a frustrating reality: most AI tools either require heavy technical setup, lack multilingual capabilities, or feel impersonal in customer interactions. Your team spends countless hours training chatbots that still can't handle real conversations, while your competitors seem to have moved ahead with seamless AI experiences.

This is exactly the challenge ESTsoft addresses. Based in Seoul, South Korea, ESTsoft is pioneering what they call "the most universal interface for human" — building the conversational AI infrastructure that powers natural human-AI interactions across languages, platforms, and use cases.

What makes ESTsoft stand out is their comprehensive approach. Instead of offering isolated tools, they provide an end-to-end AI ecosystem that combines conversational AI humans, video production tools, and multilingual AI capabilities. Whether you need a virtual representative for your museum, automated video localization for your marketing content, or a multilingual customer service interface, ESTsoft delivers it through a unified platform.

The market has responded strongly to this vision. Perso AI, ESTsoft's flagship subscription service, has grown to over 460,000 users, with an impressive 90% coming from international markets across North America and Europe. Their 2025 revenue reached 106.7 billion KRW, marking the second consecutive year they've exceeded the 1 trillion KRW threshold — a clear signal of sustained market trust and business momentum.

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Core Features That Drive Real Business Value

Rather than overwhelming you with a feature list, let me walk through what ESTsoft's technology actually enables for your business — the tangible outcomes that matter when evaluating AI solutions.

Perso Interactive transforms how you engage with customers. This next-generation interactive AI interface handles real-time conversations in over 110 languages, connecting seamlessly with large language models to provide intelligent, context-aware responses. Imagine having a multilingual customer service representative available 24/7 at your exhibition booth or retail location — one that understands cultural nuances and maintains consistent brand voice. That's what Perso Interactive delivers.

Perso AI Dubbing solves one of the most painful aspects of global content distribution: video localization. With support for 32+ languages and an impressive 98.5% voice matching accuracy, this tool automatically synchronizes lip movements to your dubbed audio. Whether you're adapting YouTube content for international audiences, localizing marketing videos for new markets, or creating multilingual E-Learning materials, Perso AI Dubbing produces results that feel native rather than translated. The lip sync technology ensures your audience stays immersed in the content rather than noticing the localization effort.

AI Human lets you create custom virtual avatars that represent your brand. Using advanced face generation technology, you can develop digital spokespeople, training video hosts, or customer service representatives that look and sound exactly how you envision. The level of customization means your AI human becomes a genuine extension of your brand identity.

Perso AI Studio democratizes professional video production. Upload your PowerPoint presentation, and the system automatically generates a professional video with one of over 6,000 voices in 4K quality — no filming crew needed. For businesses that need regular video content but lack production resources, this capability transforms what's possible.

Alan represents ESTsoft's approach to intelligent search — an AI that understands the subtle nuances of semantic meaning, using multi-LLM architecture and agent collaboration to deliver contextually accurate results even across cultural contexts.

Perso Interactive SDK gives developers the building blocks to integrate multilingual AI interactions directly into their applications, supporting over 100 languages with multiple LLM API integrations.

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Who Is Using ESTsoft

One of the best ways to determine if a product fits your needs is seeing how others in similar situations have applied it. ESTsoft serves a diverse range of industries, and you might find your scenario reflected in one of these use cases.

Exhibition and Trade Show Organizers face a common challenge: overwhelming visitor inquiries for information that's repetitive but necessary. Multiple language requests compound the problem. With ESTsoft's AI solutions, you can deploy 24-hour AI guides that handle product introductions, demonstration explanations, and multilingual real-time support. The system collects potential customer information automatically while freeing your staff to focus on high-value interactions. One exhibition organizer reported significant reductions in staff overtime while capturing more qualified leads.

Airports and Transportation Hubs serve diverse traveler populations who need quick, accurate information in their native language — from gate changes to immigration procedures. ESTsoft enables natural multilingual对话 that provides real-time assistance and location guidance, eliminating language barriers that traditionally frustrate international travelers.

Hotels and Tourist Destinations use AI virtual concierges to handle room booking inquiries, restaurant recommendations, and local attraction information. The digital concierge maintains consistent service quality regardless of check-in time or guest volume, enhancing the visitor experience without proportional staffing increases.

Retail and Shopping brands leverage ESTsoft's extensive AI avatar library — including both Korean and international virtual形象 — to maintain visual consistency across multilingual marketing campaigns. The result is stronger brand recognition and higher audience engagement.

Sports Stadiums and Concert Venues deploy AI athlete avatars that provide real-time game information, interactive cheers, and fan engagement experiences that elevate the spectator experience beyond traditional jumbotron announcements.

Libraries and Public Institutions use intelligent conversational guidance for book searches, information queries, and citizen service requests. The AI system handles routine inquiries that would otherwise require dedicated staff, making public services more accessible and efficient.

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Technical Excellence Behind the Platform

If you're evaluating AI solutions seriously, you need to understand not just what the technology does, but how well it performs. ESTsoft has invested heavily in building technical capabilities that deliver measurable results.

The conversational AI foundation combines real-time dialogue processing with connections to major large language models including OpenAI GPT-3.5, HyperCLOVA X, LLaMA, and Gemini. This multi-LLM architecture means your implementation can leverage the best model for your specific use case rather than being locked into a single provider.

The speech synthesis capabilities span over 6,000 multilingual voices with emotional expression capabilities. Whether you need a warm, friendly tone for customer service or a professional, authoritative voice for training materials, the voice library provides options across languages and speaking styles. Custom TTS (Text-to-Speech) services let you develop a unique voice identity if the standard library doesn't meet your needs.

For video processing, ESTsoft's STV (Speech-to-Video) technology drives lip synchronization by detecting facial features and aligning them to audio input. The system produces 4K high-definition output, ensuring your localized content maintains the quality standards of your original production.

The face generation technology offers flexibility across different use cases: Signature avatars for high-end brand representation, Premium for marketing content, Basic for cost-effective applications, Photo avatars from single images, Live avatars for real-time interaction, and Video avatars for pre-produced content.

The multilingual infrastructure supports 32+ dubbing languages, 100+ SDK languages, and 110+ languages for recognition and conversation. This breadth means you can serve global audiences without compromising on language options.

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Ecosystem and Partners

Beyond individual features, understanding a company's position in the broader AI ecosystem helps you assess long-term viability and integration possibilities. ESTsoft has built an impressive network of enterprise clients, technology partners, and institutional relationships.

Their enterprise client roster reads like a who's who of Korean business: Samsung Electronics, Shinsegae (新世界), Lotte, Hyundai Motor, and SK Telecom — major corporations with rigorous vendor selection processes. These relationships demonstrate that ESTsoft's technology meets the demanding standards of organizations operating at scale.

International expansion is clearly a priority. ESTsoft has established partnerships with Japanese companies including NTT Media Supply and Nikon Traffic (尼康交通), with contracts to introduce AI virtual human services to Japanese taxi services. This cross-border deployment validates the technology's ability to handle real-world, high-volume applications beyond its home market.

Public and educational institutions across Korea work with ESTsoft, including multiple universities, government agencies, and public cultural organizations. These deployments often require meeting specific regulatory and accessibility standards that consumer products may not demand.

Industry recognition includes presence at major technology events: MWC 2026 where ESTsoft showcased Perso Interactive innovations targeting the global AX (Experience) market, and CES 2026 where they collaborated with Samsung Electronics to demonstrate the Perso Interactive AI Promoter.

On the technology side, partnerships with OpenAI, HyperCLOVA X, LLaMA, Claude, and other major LLM providers ensure ESTsoft can offer flexible, best-in-class AI models rather than being limited to proprietary technology.

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Frequently Asked Questions