LangBot
Editor's PickOpen-source, production-grade LLM-native IM bot platform — deploy one AI assistant across WeChat, WeCom, Feishu, DingTalk, QQ, Discord, Telegram and Slack with RAG, agents and a WebUI.
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GPT-4oWhat is LangBot?
LangBot is an open-source, LLM-native instant-messaging bot development and delivery platform. Configure your AI capability once — large language models, a RAG knowledge base, agents and existing AI apps such as Dify, Coze, n8n, Langflow and FastGPT — and ship it to every channel through first-party adapters: QQ and QQ channels, personal WeChat (via Gewechat), WeCom/WeChat Work, official accounts, Feishu/Lark, DingTalk, Discord, Telegram, Slack, LINE and Matrix. It supports multimodal text, voice and image messages, multi-turn conversation and tool calling, a plugin/extension ecosystem, and a WebUI for fast deployment. Built for production rather than demos, it adds access control, rate limiting, sensitive-word filtering, monitoring and exception recovery, and works with OpenAI/ChatGPT, DeepSeek, Claude, Gemini, xAI Grok, Ollama, LM Studio, Alibaba Bailian and Volcano models. It is free and open source, self-hostable, and widely used for personal assistants, customer service, internal Q&A and enterprise automation.
Pros
- One bot simultaneously online across essentially every chat platform.
- Truly production-grade with moderation, permissions and stability features.
- Broad model and LLMOps (Dify/n8n/Langflow) compatibility.
- Free and open source, self-hosted with data in your control.
- WebUI makes deployment approachable for non-experts.
Cons
- Self-hosting still requires a server and some setup.
- Personal-WeChat access relies on third-party bridges with platform-policy risk.
- You supply and pay for the underlying LLM tokens.
- Many channels require registering apps and credentials on each platform.
Detailed Ratings
Compare with Alternatives
| Feature | LangBot | AstrBot | Synkora | EverMemOS |
|---|---|---|---|---|
| Rating | 0.0 | 0.0 | 0.0 | 4.6 |
| Pricing | Free | Free | Freemium | Free |
| Starting From | — | — | — | Free |
| API | — | — | — | — |
| Free Tier | — | — | — | — |
| Mobile App | — | — | — | — |
Who is it for
Enterprise assistant
One AI employee answering on WeCom, Feishu, DingTalk and Slack.
Customer service & Q&A
RAG bot answering product and internal questions on every channel.
Community/group bots
QQ, Discord and Telegram group assistants with moderation.
Workflow automation
Connect n8n/Dify/Coze pipelines to chat users in IM apps.
Personal AI
A private multimodal assistant on your own WeChat/Telegram.