Bilibili-first bot framework with a ChatGPT backbone

What it does Langup is a Python toolkit that glues OpenAI’s API (via LangChain) to Bilibili’s platform APIs, letting you deploy LLM-driven personas across livestreams, video comments, direct messages, and voice chat. You define a system prompt—say, a sarcastic livestreamer or a helpful summary bot—and the library handles listening, filtering, and replying within Bilibili’s ecosystem. It also supports terminal and speech-based interaction if you want to test your persona offline.

The interesting bit Most LLM bot frameworks treat Twitter or Discord as the default stage; Langup treats Bilibili as the first-class citizen, complete with browser-cookie credential sniffing, content filtering for live barrage, and “at-signal” parsing in video threads. The VTuber live-chat mode is the standout: it ingests bullet comments, runs them through a persona, and spits replies back into the stream with concurrency controls.

Key highlights

• First-class Bilibili integration: livestream chat, video @-replies, and DM bots out of the box.
• Persona-driven: behavior is shaped entirely by a system prompt string, from “helpful assistant” to “angry contrarian.”
• Automatic credential extraction from recently used browser sessions (Edge, etc.), avoiding manual cookie copy-paste.
• Voice input support via speech recognition, plus a plain terminal mode for local testing.
• Built-in content filtering and configurable ban-word lists for livestream safety.

Caveats

• Several listener modules—including WeChat, QQ, and Bilibili private messages—are marked as unfinished in the todo list.
• The README itself warns that the code may throw exceptions, and the architecture diagram notes some modules are still pending implementation.
• Platform scope is narrow: outside of Bilibili and generic console/voice modes, there is little here for other networks.

Verdict Chinese streamers and Bilibili UP hosts who want to experiment with LLM automation will find this a convenient starting point. If you have no presence on Bilibili, there is almost nothing here for you.