LangChain vs Haystack
A side-by-side comparison of LangChain and Haystack — pricing, license, deployment, and where each tool wins.
LangChain
langchain.com
A framework for developing applications powered by language models.
Haystack
haystack.deepset.ai
A framework for building NLP applications (e.g. agents, semantic search, question-answering) with language models.
| Feature | LangChain | Haystack |
|---|---|---|
| Pricing | Freemium | Freemium |
| Model | Freemium | Freemium |
| License | Proprietary | Proprietary |
| Deployment | Cloud | Cloud |
| Category | Code & Development | Code & Development |
| Self-hosted | ✕No | ✕No |
| Free tier | ✓Yes | ✓Yes |
Pick LangChain if…
- ✓You prefer LangChain's feature set or ecosystem fit.
Pick Haystack if…
- ✓You prefer Haystack's feature set or ecosystem fit.