companies

LlamaIndex Inc.

Makes LlamaIndex, an open-source data framework for connecting large language models to external data sources for retrieval-augmented generation (RAG) applications.

LlamaIndex Inc. was founded in 2023 by Jerry Liu and Simon Suo. Liu previously worked in machine learning and data science roles at Uber and Robust Intelligence, while Suo brought experience from Waymo and Waabi. The company is headquartered in San Francisco. LlamaIndex builds an open-source data framework that helps developers connect large language models to private and external data sources, enabling retrieval-augmented generation (RAG) and agentic applications. The company also offers LlamaCloud, a managed platform for enterprise document parsing and retrieval. LlamaIndex raised an $8.5 million seed round led by Greylock Partners in 2023, followed by a Series A round in 2025 led by Norwest Venture Partners with continued participation from Greylock, bringing total disclosed funding to roughly $27.5 million. Databricks and KPMG US have also invested in the company.

Founded

2023

Headquarters

San Francisco, United States

Sector

infrastructure