Alternatives to Llamaindex
6 alternatives found
LlamaIndex (formerly GPT Index) is an open-source data framework for LLM applications, created by Jerry Liu and Simon Suo in 2022 and released as a Python library. LlamaIndex's core design philosophy is data-first: it provides the infrastructure to connect LLMs with external data through ingestion pipelines, indexing strategies, retrieval engines, and query interfaces.
LangChain
General LLM orchestration — broader tool/agent ecosystem, LlamaIndex focuses on data/retrieval
Haystack
Production NLP pipeline framework — more opinionated architecture for search and QA systems
Weaviate
Vector database with built-in hybrid search — LlamaIndex often uses Weaviate as its vector store
Pinecone
Managed vector database — LlamaIndex integrates Pinecone as a VectorStoreIndex backend
Semantic Kernel
Microsoft LLM SDK — enterprise .NET/C# teams prefer Semantic Kernel over Python-first LlamaIndex
Hugging Face
Open model ecosystem — LlamaIndex uses HF models as LLM backends for local inference
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