This article gives a detailed description of True Knowledge: a commercial, open-domain question answering platform. The system combines a large and growing structured knowledge base of common sense, factual and lexical knowledge; a natural language translation system that turns user questions into internal language-independent queries and an inference system that can answer those queries using both directly represented and inferred knowledge. The system is live and answers millions of questions per month asked by internet users.

The motivation for the project was to tackle what might be regarded as the "holy grail" of Internet search, replacing larger and larger numbers of keyword-based lists of links with perfect, direct answers to naturally phrased queries on any subject. The platform was also designed to scale, with the primary mechanism for answering more and more questions being the addition of knowledge to the platform rather than writing more program code. Additional knowledge areas are typically included by adding "knowledge about knowledge." The system is live and answers millions of questions per month, asked by real Internet users. Questions can be tried at (and API access obtained from) www.trueknowledge.com. All the intellectual External computer systems can connect to the property was subsequently transferred in 2006 platform at two points through an API.