LlamaIndex
Officially listedEnterprise-grade data framework for building production RAG applications and document intelligence agents.
LlamaIndex
LlamaIndex is a data framework for LLM applications that helps developers connect private enterprise data to large language models, building production-grade RAG applications and document intelligence agents. The open source core is MIT-licensed, the project has roughly 45K GitHub stars, and it serves Fortune 500 companies such as Salesforce and KPMG.
Core Capabilities
- Data Connectors: LlamaHub plugs into 160+ data sources (PDF, databases, Notion, S3, and more)
- Multiple Indexing Strategies: Vector indexes, keyword indexes, knowledge graphs, and tree indexes
- LlamaParse: VLM-powered intelligent document parsing supporting 130+ formats and complex tables
- Agent Framework: FunctionAgent, ReActAgent, and more, with tool calling and multi-step reasoning
- Workflows: Event-driven multi-step orchestration combining agents and data connectors
- Evaluation Module: LLM-as-Judge metrics such as faithfulness and answer relevance
Use Cases AI engineers prototyping RAG systems, enterprise document automation teams processing complex PDFs, and knowledge agent development in document-heavy industries like finance, insurance, and healthcare.
Unique Advantages A leader in RAG data pipelines, with 30-40% less code than LangChain; LlamaParse stands out in complex document parsing benchmarks, and a RAG prototype can start with just 5 lines of code.
Editor's Review An active open source community and a 5.0/5 Product Hunt rating. LlamaCloud's free tier of 10,000 credits is well suited to validating document parsing. Agent orchestration trails LangGraph, but for RAG-focused scenarios it is the lighter-weight choice.
Pricing
### 💰 定价模式：开源免费 + 云服务按量计费 **起步价**：开源核心完全免费（MIT 许可） #### 主要方案 - **Free**：$0 — 10,000 积分/月，5 索引，社区支持 - **Starter**：$50/月 — 40,000 积分，50 索引，10 用户 - **Pro**：$500/月 — 400,000 积分，100 索引，Slack 优先支持 - **Enterprise**：定制 — VPC 部署、SSO、SOC2/HIPAA 合规 #### 试用/其他信息 开源框架仅需承担 LLM API 费用；LlamaCloud 超额按 $1.25/1,000 积分计费。 — Visit website
FAQ
Is LlamaIndex free?
The open source core (LlamaIndex Framework) is completely free under the MIT license. LlamaCloud offers a free tier (10,000 credits/month), Starter at $50/month, and Pro at $500/month.
What are LlamaIndex's main features?
Core features include 160+ data connectors, multiple retrieval indexing strategies, LlamaParse intelligent document parsing, an agent framework, Workflows orchestration, and RAG evaluation modules.
How does LlamaIndex differ from LangChain?
LlamaIndex focuses on RAG data pipelines with leaner code and lower latency; LangChain has a broader ecosystem and stronger agent orchestration. LlamaIndex leads in document parsing.
What skill level is LlamaIndex suited for?
A RAG prototype can start in 5 lines of code, ideal for fast validation. Production deployment requires understanding vector databases, LLM APIs, and indexing strategies, so there is a learning curve.
Which document formats does LlamaParse support?
It supports 130+ file formats including PDF, Word, and PPT. VLMs handle nested tables, charts, handwriting, and multimodal content, and Auto Mode can save up to 80% of credits.
What enterprise capabilities does LlamaIndex offer?
The Enterprise plan provides VPC private deployment, SSO/MFA, a 99.9% SLA, SOC2 Type II / HIPAA / GDPR compliance, and availability on the AWS/Azure Marketplace.