head to head · open source
huginn vs langsmith-sdk
huginn has 49,969 GitHub stars, 4,299 forks, 698 open issues and last shipped yesterday. langsmith-sdk has 1,059 stars, 296 forks, 216 open issues and last shipped yesterday. huginn leads on adoption by 4,619% (49,969 vs 1,059 stars). huginn is written in Ruby under MIT; langsmith-sdk is written in Python under MIT. huginn has attracted 9% as many forks as stars, langsmith-sdk 28%. langsmith-sdk was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| huginn | langsmith-sdk | |
|---|---|---|
| GitHub stars | ★ 50K | ★ 1.1K |
| License | MIT | MIT |
| Written in | Ruby | Python |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 4.3K | ⑂ 296 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick huginn if
- You weight community size — 50K stars and counting
- You want the MIT license terms
- Your stack matches Ruby
- You value the larger contributor base for long-term maintenance
pick langsmith-sdk if
- You want the langsmith-sdk feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and langsmith-sdk fits your workflow better
About huginn
Huginn is an open source system for building agents that perform automated tasks online, written in Ruby and released under the MIT license. Its agents read the web, watch for events, and take actions on the user's behalf. Internally, agents create and consume events that propagate along a directed graph, which means one agent's output becomes another agent's input and a chain of small steps can be composed into a larger workflow. The project lives in the Ruby ecosystem and is distributed as an official Docker image or installed locally from a forked repository.
read the full huginn overview →
About langsmith-sdk
LangSmith SDK is the official pair of Python and JavaScript client libraries for the LangSmith platform, built and maintained by LangChain for teams that need to debug, evaluate, and monitor language models and intelligent agents.
read the full langsmith-sdk overview →
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Frequently asked questions
Is huginn or langsmith-sdk more popular?
huginn has 49,969 GitHub stars and langsmith-sdk has 1,059. huginn has the larger community by that measure.
Are huginn and langsmith-sdk free?
Both are open source. huginn is licensed under MIT and langsmith-sdk under MIT. Neither carries a licence fee.
What is the difference between huginn and langsmith-sdk?
huginn is written in Ruby and langsmith-sdk in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, huginn or langsmith-sdk?
Choose huginn if you want the larger community (49,969 stars) or its MIT licence terms. Choose langsmith-sdk if its feature set, stack or MIT licence fits better. Both are self-hostable.