Riff allows anyone to have virtual "office hours" with an expert on a given topic. For example, if you wanted to learn about cellular biology, you could ask a virtual professor of cellular biology questions about the topic.

To accomplish this, Riff uses a combination of OpenAI's GPT-3 and Operand.

When the user asks a question, Riff uses a GPT-3 prompt to choose which Wikipedia article would be most relevant to the question. For example, if the user asks "What is the difference between a virus and a bacterium?", Riff might choose the virus article.

Riff indexes one or more relevant Wikipedia articles with Operand, and then uses search results to pass context relevant knowledge into a conversational GPT-3 prompt.