652M+ voice data and sub-second ultra-low latency
for real-time conversation in education, public services, contact centers, senior care, and more.
Four core technologies for trustworthy, universally accessible AI
Sub-second ultra-low latency real-time conversation so users never feel delay.
Zero-Barrier Access
No internet required. We connect the existing telephone network (PSTN) directly to AI for service without device barriers.
For fact-based accurate responses,
we reference external knowledge and verified data
in real time — a core technology for trust.
Best-in-class STT in unstructured noise and natural TTS for human-like voice.
We deliver only accurate, reliable information — what people, enterprises, and public institutions care about most.
Technology designed to remove adoption risk and support confident decision-making.
Our RAG system addresses hallucination in generative AI and is designed so that AI delivers accurate, trustworthy information that enterprises and public institutions value most.
Connect multiple state-of-the-art language models in parallel and choose the best AI model for each use case.
Voice Data Sets
The largest speech data in the market.
Best-in-class STT that accurately recognizes
even in unstructured noise environments.
We hold the largest speech dataset in Korea (650M+ utterances), enabling accurate voice recognition across diverse environments. We specialize in hard-to-recognize data such as non-native children and silver-generation speech, and this unique asset creates a defensible competitive advantage.
Voice Data Sets
The largest speech data in the market.
Best-in-class STT that accurately recognizes
even in unstructured noise environments.
This capability is implemented as a PSTN-integrated network and high-reliability AI architecture, running stably in production.
Three core full-stack developers and five mid-level developers with Kakao VoiceTalk experience, covering frontend, DevOps, service planning, backend, and UX design as one team.
Voice AI experts with 652M+ voice data, STT/TTS optimization, Hands-off AI, and RAG and Multi-LLM technology.
A team with Kakao VoiceTalk experience designed
large-scale traffic distribution and zero-downtime operations.A team with Kakao VoiceTalk experience designed large-scale traffic distribution and zero-downtime operations.
RAG-based architecture blocks hallucination at the system level and keeps AI reliable in production.
PSTN-integrated infrastructure delivers AI services stably even without internet; large-scale traffic distribution and redundant design support 365-day zero-downtime operations. We built an inclusive AI environment that works with 2G phones and landlines.
High-availability architecture ensures 99.9%+ uptime with automatic recovery from failures. RAG-based retrieval and evidence-joining are integrated at the architecture level to block hallucination in production.