LLM InfrastructureOpen Source✦ Free Tier

Weaviate

Cloud-native vector search engine

11,000 stars● Health 80ActiveApp Infrastructure

About

Open-source vector database with hybrid search (vector + BM25), multi-modal support, and native GraphQL API. Strong enterprise adoption.

Choose Weaviate when…

  • You want a knowledge graph alongside vector search
  • Multi-modal search (text + image) is needed
  • You need hybrid keyword + vector search

Builder Slot

What knowledge does your AI have?Optional for most stacks

The memory layer — stores and retrieves vector embeddings for RAG and semantic search

Dev Tools
Not applicable
App Infra
Optional
Hybrid
Optional

Other tools in this slot:

Stack Genome Detection

AIchitect's Genome scanner detects Weaviate in your project via these signals:

npm packages
weaviate-client
pip packages
weaviate-client
env vars
WEAVIATE_URLWEAVIATE_API_KEY

Integrates with (2)

LangChainPipelines & RAG

LangChain wraps Weaviate's client in a vectorstore interface compatible with all LangChain retrievers.

Multimodal and multi-tenant semantic search within LangChain agents — Weaviate's object-level memory accessible from any chain.

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LlamaIndexPipelines & RAG

LlamaIndex connects to Weaviate as a vector store, using its GraphQL API for multimodal and multi-tenant retrieval.

Multimodal RAG within LlamaIndex — retrieve across text, images, and structured data from a single Weaviate index.

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Alternatives to consider (3)

Pricing

✦ Free tier available
CloudUsage-based

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Weaviate on AIchitect[![Weaviate](https://aichitect.dev/badge/tool/weaviate)](https://aichitect.dev/tool/weaviate)

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