LlamaIndex

Profile

Overview

The bottom line — what this framework is, who it's for, and when to walk away.

Bottom Line Up Front

LlamaIndex is a Python and TypeScript framework for building LLM-powered applications that leverage private or proprietary data through context augmentation. It offers tools for data ingestion, indexing, querying, and agent orchestration, supporting workflows from simple RAG to complex autonomous agents.

Best For

Building LLM agents and context-augmented applications over private data, from prototype to production.

Avoid If

no data

Strengths

  • +High-level API enables quick start with 5 lines of code for data ingestion and querying.
  • +Low-level APIs allow extensive customization and extension of core modules, including connectors, indices, and engines.
  • +Comprehensive tools for data ingestion from various sources and formats via data connectors.
  • +Structures data into efficient intermediate representations using data indexes for LLMs.
  • +Provides query and chat engines for natural language access to augmented data.
  • +Supports LLM-powered agents augmented by tools and API integrations for complex tasks.
  • +Includes observability and evaluation integrations for rigorous application monitoring and experimentation.
  • +Features event-driven workflows for combining agents, data, and tools, offering flexibility over graph-based approaches.
  • +Offers managed services via LlamaCloud for enterprise-grade parsing, extraction, indexing, and retrieval.

Weaknesses

    Project Health

    Is this project alive, well-maintained, and safe to bet on long-term?

    Stars

    52,039

    Open Issues

    715

    Last Commit

    4d ago

    Commit Frequency

    11x/week

    Bus Factor Score

    9 / 10

    Maintainers

    100

    Latest Version

    v0.14.24

    Total Releases

    100

    Repo Age

    3y 10mo

    Forks

    8,087

    Monthly Downloads

    6.4M

    last 30 days

    Versions Published

    504

    Known Vulnerabilities

    9Highest: Critical

    Dependent Repos

    1.5K

    public repos using this

    Fit

    Does it support the workflows, patterns, and capabilities your team actually needs?

    State Management

    Workflows orchestrate multi-step processes for agents, data connectors, and tools, featuring event-driven execution with reflection and error-correction for complex LLM applications.

    Perspective

    Your expertise shapes what we build next.

    We build for engineers who make real architectural decisions. If something is missing, inaccurate, or could be more useful — we want to hear it.

    Last updated: 7 September 2026

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