LangChain vs Weaviate
A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.
LangChain RAG | Weaviate RAG | |
|---|---|---|
| Tagline | The broad LLM application framework — chains, agents, retrievers. | Open-source vector DB with hybrid search and modules. |
| Category | RAG | RAG |
| Pricing | Freemium· Free open-source; LangSmith paid | Freemium· Free open-source; cloud from $25/mo |
| Model | BYO (any major LLM) | Hosted vector DB (not an LLM) |
| Editorial score | 8.3 / 10 | 8.4 / 10 |
| Use cases | general LLM appsRAGagents | self-hosted RAGhybrid search |
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| Website | www.langchain.com | weaviate.io |
Pick LangChain if
- ✅ Massive integration surface
- ✅ Familiar to most LLM engineers
- ✅ Pairs well with LangSmith for eval
- ✅ TypeScript + Python
Pick Weaviate if
- ✅ Hybrid search built in
- ✅ Self-host or cloud
- ✅ Module ecosystem
- ✅ GraphQL + REST APIs