nanobot vs langchainjs
nanobot is the more adopted project, with 49,339 GitHub stars against 18,293 for langchainjs (about 2.7x more). nanobot was updated more recently (today, against yesterday). nanobot is written in Python and langchainjs in TypeScript.
| nanobot | langchainjs | |
|---|---|---|
| Description | Ultra-lightweight, open-source, self-hosted personal AI agent framework in Python with WebUI, tools, memory, MCP, multi-agent workflows, automation, and chat apps | The agent engineering platform |
| Author | HKUDS | langchain-ai |
| Stars | 49339 | 18293 |
| Language | Python | TypeScript |
| License | MIT | MIT |
| Last update | 2026-10-25T08:12:09Z | 2026-10-23T19:05:24Z |
| Source | https://github.com/HKUDS/nanobot | https://github.com/langchain-ai/langchainjs |
| Stars this week | +193 | +15 |
Which should you choose?
- nanobot describes itself as: "Ultra-lightweight, open-source, self-hosted personal AI agent framework in Python with WebUI, tools, memory, MCP, multi-agent workflows..."
- langchainjs describes itself as: "The agent engineering platform"
Stars measure adoption, not fit. Read both READMEs for the tools each server exposes, then try them side by side in your client: the install guide shows how to add both.
Frequently asked questions
Which is more popular, nanobot or langchainjs?
nanobot has more GitHub stars: 49,339 against 18,293. This week nanobot gained 193 stars and langchainjs gained 15, which says more about current momentum than the all-time total. Both figures are refreshed daily from GitHub.
Are nanobot and langchainjs open source?
nanobot: MIT (open source). langchainjs: MIT (open source). An open-source license lets you run and self-host the server at no cost. If either one wraps a commercial API, that provider's pricing still applies, so read each README for the accounts and keys it needs.
Can I use nanobot and langchainjs together?
Yes, if both run as MCP servers. MCP clients such as Claude Code, Cursor and VS Code can connect to several servers at once, and the agent picks tools from each. Give them distinct names in your config, and keep the number of active servers small so tool definitions do not crowd the context window.
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nanobot details · langchainjs details · All AI Agent Frameworks MCP servers
Data last updated . Stars and downloads are refreshed every day from GitHub and npm.