a16z-infra/ai-town is a deployable starter kit for creating and customizing a virtual town where AI characters live, talk, and interact. No latest release information is provided, so this introduces the project as the repository describes it rather than the changes in any particular version.
According to the README, AI Town was inspired by the research paper 'Generative Agents: Interactive Simulacra of Human Behavior'. The project is used to build your own town implementing conversations and social interaction among virtual characters. It is written in TypeScript and released under the MIT license. The README explains that it uses Convex as the game engine, database, and vector search. The default chat model is llama3 and the embedding model is mxbai-embed-large. This configuration shows which tools and models the virtual town's conversational features and search-based features are built around.
That said, the provided FACTS contain no latest release and no measurements that would let you judge performance or cost. What can be confirmed here is only the description of a deployable, customizable starter kit and the configuration stated in the documentation. It is difficult to treat this as evidence of performance when operating many characters, or of actual deployment costs.