LlamaIndex — Data Framework for LLM Applications

Key Features

Data Connectors

Ingest from PDFs, databases, APIs, Notion, Slack, Google Drive, and 160+ sources:

from llama_index.core import SimpleDirectoryReader
documents = SimpleDirectoryReader("./data").load_data()

Indexing & Retrieval

from llama_index.core import VectorStoreIndex
index = VectorStoreIndex.from_documents(documents)
query_engine = index.as_query_engine()
response = query_engine.query("What is the revenue trend?")

Agents

Build data-aware agents that can query multiple data sources, use tools, and maintain conversation state.