Feishu OpenAI is an open-source bot that brings OpenAI’s models into Feishu (Lark), the workplace messaging platform, turning group and direct chats into a full AI assistant. It integrates GPT-4 and GPT-4V for conversation and vision, DALL·E-3 for image creation and Whisper for voice. The project has earned more than 5,600 stars on GitHub, with its latest updates in 2025.
Written in Go and designed for self-hosting, Feishu OpenAI plugs into Feishu through the platform’s bot APIs so teams can talk to AI where they already work. Conversations support multiple parallel topics, so a single bot can carry on several threads without mixing context, and role-play presets let users switch the assistant’s persona and behavior. Voice messages are transcribed and answered naturally, images can be generated or analyzed in chat, and the bot can work with spreadsheet data and export documents — covering the everyday knowledge-work tasks Feishu users actually ask for. Deployment is straightforward with Docker or a single binary, and you bring your own OpenAI API key. The project comes from the ConnectAI open-source community, which maintains similar AI integrations for other workplace and developer platforms.
Feishu OpenAI is free and open source under the GPL-3.0 license. You pay only for your own OpenAI API usage.
Feishu OpenAI is for teams that live in Feishu or Lark and want a capable ChatGPT-style assistant inside their chats — for drafting, brainstorming, image creation, voice notes and quick document work — without leaving their collaboration tool.