Risuai

RisuAI is an open source client for AI roleplay. Users create AI characters, chat with them, and build their own fictional worlds, then optionally share characters with others through RisuRealm, the project's community library where characters can be published and downloaded. The application is built for two kinds of users. Casual users can pick a character from RisuRealm and start chatting in a few clicks, without touching technical settings. Power users get advanced controls, including emotion images, custom prompt templates, inlaid images, prompt injection and long term memory. RisuAI can also act as a frontend for other model backends, with the site naming GPT 4, Claude and OpenRouter among the options, and users can switch between them. The vendor also says it can serve as the AI backend itself. RisuAI runs on Windows, macOS, Linux, Android and the web, so the same characters are reachable from any device. The source code is published on GitHub, built with Svelte, TypeScript and WebGPU, and the project invites forks and contributions. The site publishes no paid plans or prices. Costs for third party model backends depend on the provider a user connects.