The best llama_index alternatives

PageIndex

VectifyAI/PageIndex

📑 PageIndex: Document Index for Vectorless, Reasoning-based RAG

Choose PageIndex if…

• you specifically need agentic-ai or ai

Shares agents, llm, rag, vector-database with llama_index.

langchain

langchain-ai/langchain

The agent engineering platform.

Choose langchain if…

• you want the more widely starred option (148.9k)
• you specifically need ai or ai-agents

Shares agents, framework, llm, rag with llama_index.

langgraph

langchain-ai/langgraph

Build resilient agents.

Choose langgraph if…

• you specifically need ai or ai-agents

Shares agents, framework, llm, rag with llama_index.

haystack

deepset-ai/haystack

Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Built for scalable agents, RAG, multimodal applications, semantic search, and conversational systems.

Choose haystack if…

• Apache License 2.0 suits your use better than MIT License
• you specifically need agent-framework or agentic-ai

Shares agents, framework, llm, rag with llama_index.

LazyLLM

LazyAGI/LazyLLM

Easiest and laziest way for building multi-agent LLMs applications.

Choose LazyLLM if…

• Apache License 2.0 suits your use better than MIT License
• you prefer a smaller, narrower project to a large one
• you specifically need ai-agent or deep-learning

Shares agents, data, framework, llamaindex with llama_index.

mem0

mem0ai/mem0

The Memory Layer for AI Agents - Drop-in memory infrastructure for AI agents and apps. Context that persists. Built for production.

Choose mem0 if…

• Apache License 2.0 suits your use better than MIT License
• you specifically need agentic-memory or agentic-memory-system

Shares agents, llm, rag with llama_index.

AdalFlow

SylphAI-Inc/AdalFlow

AdalFlow: The library to build & auto-optimize LLM applications.

Choose AdalFlow if…

• you prefer a smaller, narrower project to a large one
• you specifically need agent or ai

Shares framework, llm, rag with llama_index.

potpie

potpie-ai/potpie

Context Graph for AI Native SDLC

Choose potpie if…

• Apache License 2.0 suits your use better than MIT License
• you prefer a smaller, narrower project to a large one
• you specifically need ai-agents or ai-agents-framework

Shares agents, rag with llama_index.

TaskingAI

TaskingAI/TaskingAI

The open source platform for AI-native application development.

Choose TaskingAI if…

• Apache License 2.0 suits your use better than MIT License
• you prefer a smaller, narrower project to a large one
• you specifically need agent or ai

Shares llm, rag with llama_index.

anything-llm

Mintplex-Labs/anything-llm

Stop renting your intelligence. Own it with AnythingLLM. Everything you need for a powerful local-first agent experience

Choose anything-llm if…

• you would rather work in JavaScript than Python
• you specifically need agent-computer or agent-harness

Shares llm, rag, vector-database with llama_index.

quivr

The-Vibe-Company/quivr

Opiniated RAG for integrating GenAI in your apps 🧠 Focus on your product rather than the RAG. Easy integration in existing products with customisation! Any LLM: GPT4, Groq, Llama. Any Vectorstore: PGVector, Faiss. Any Files. Anyway you want.

Choose quivr if…

• you specifically need ai or api

Shares framework, llm, rag with llama_index.

openai-agents-python

openai/openai-agents-python

A lightweight, powerful framework for multi-agent workflows

Choose openai-agents-python if…

• you specifically need ai or harness

Shares agents, framework, llm with llama_index.