Convai

Convai lets developers create conversational AI characters for games, virtual worlds and training simulations. Characters can hold spoken conversations, answer questions from a knowledge base you provide, and perform actions in the scene, such as walking to a point or picking up an object.

Convai provides plugins for Unity and Unreal Engine and supports speech input and output, so players can talk to characters through a microphone. Its documentation walks through common setups for each engine. It suits prototypes and experiences built around conversation. As with any live dialogue system, plan for usage-based costs, response delay and characters saying things you didn't intend. Keep knowledge bases tight, test with players who push the limits, and check the vendor's data terms before you collect voice recordings from players.