LangBot is free, with no paid plan attached. Windmill is free, with no paid plan attached. Both are listed under Workflow Automation, so this is a like-for-like comparison. Neither is ranked above the other — Flocci carries no sponsored placement.
LangBot is free, with no paid plan attached and is listed for builds AI bots for WeChat, QQ, Discord, Slack, Telegram and other chat platforms. Windmill is free, with no paid plan attached and is listed for open-source, self-hostable with unlimited executions on the free tier. Both sit in Workflow Automation.
Neither — LangBot and Windmill are both free, so the choice comes down to capability rather than cost. Both entries list what they uniquely do above.
Choose LangBot if you need builds AI bots for WeChat, QQ, Discord, Slack, Telegram and other chat platforms; choose Windmill if you need open-source, self-hostable with unlimited executions on the free tier. Flocci AI Tools does not rank one above the other — it shows both feature sets side by side and lets the requirement decide.
| LangBot | Windmill | |
|---|---|---|
| Pricing tier | Free | Free |
| Free to start | Yes | Yes |
| Category | AI Agents & Automation | AI Agents & Automation |
| Type | Workflow Automation | Workflow Automation |
| Listed capabilities |
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| Tags | langbot, ai chatbot platform for wechat discord slack, open source im bot, qq wechat ai bot, agent im bot | open source workflow engine, internal tools builder, scripts to apps, self hosted automation, developer workflow platform, free |
| Website | langbot.app | windmill.dev |
| Full page | LangBot details → | Windmill details → |
| Alternatives | LangBot alternatives → | Windmill alternatives → |