Quantz®

Quantz® is a voice AI product line from ThinkX, a Tokyo-based company whose stated mission is the fusion of science and art. ThinkX builds privately operated intelligent systems and applied services, and Quantz is the part of that portfolio aimed at conversational voice. The company describes it as a custom, proactive voice conversational agent for business: an agent system that pursues goals on its own rather than simply chatting back.

The technical story ThinkX tells is about ownership of the stack. Quantz is described as a completely private, flexibly programmable and ultra-fast realtime conversational agent foundation system, powered by a proprietary codebase of roughly 670,000 lines that includes several patented technologies. A key selling point is the contrast with common cloud voice assistants that separate the language and voice models and use filler acknowledgements such as 'thank you' or 'okay' while preparing an answer. Quantz instead aims to deliver the substantial content of the reply immediately, so the conversation feels genuinely live.

Because Quantz runs entirely on ThinkX's own servers rather than on third-party APIs plus cloud infrastructure, the company claims it is around 25 times more cost-effective than API-based alternatives. It is sold as a tailor-made agent for each organisation, with configuration and dialogue design adjusted to the business, and ThinkX lists it alongside other products such as its Voice AI OS, the CITYWALK geospatial voice guide and the ILRSA social discovery network. Note that the dedicated product subdomain returned server errors during our checks, so availability should be confirmed directly with the vendor.