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Best LlamaIndex alternatives in 2026

LlamaIndex is MIT-licensed framework for document-based and agentic AI apps. These 11 alternatives come from the same rankings, ordered by editorial score. Connected products carry a small, disclosed lift.

11 alternatives From best AI agent frameworks and tooling How we rank Share

Ranked alternatives

  1. LangChain

    The largest ecosystem here, with LangGraph for agent workflows and LangSmith for tracing on paid tiers. Its breadth can be heavy for small projects, which is where the smaller frameworks fit better.

    Best for Large agent projects that need many integrations

    Self-hostedFree and open sourceOpen source

    92.0of 100
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  2. LangGraph

    MIT-licensed graph runtime for agents, with durable state and human pauses, from the LangChain team. It sits under LangChain here as the lower-level layer, and LangSmith hosting is a separate paid service.

    Best for Stateful agents that need explicit control of each step

    Self-hostedFree and open sourceOpen source

    90.5of 100
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  3. Pydantic AI

    Also runs on Windows, macOS, Linux. Typed Python agents with OpenTelemetry tracing and an MIT license. Tracing is easiest with the separate Logfire service, and the library suits teams already using Pydantic.

    Best for Typed Python agents for Pydantic users

    WindowsmacOSLinuxFree and open sourceOpen source

    86.5of 100
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  4. Agent Development Kit (ADK)

    Also runs on Windows, macOS, Linux. Apache-2.0 code-first toolkit from Google with Python, TypeScript, Go and Java versions and a built-in web interface. Its deployment shortcuts point mainly to Google Cloud, so it fits teams already there.

    Best for Agents built in code and deployed to Google Cloud

    Command lineWindowsmacOSLinuxFree and open sourceOpen source

    85.5of 100
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  5. Haystack

    Also runs on Windows, macOS, Linux. Explicit, inspectable pipelines for retrieval and agent workflows under Apache 2.0. Pipeline design takes time to learn, and its agent focus is narrower than LangChain's.

    Best for Retrieval pipelines with explicit control

    WindowsmacOSLinuxFree and open sourceOpen source

    85.0of 100
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  6. CrewAI

    Also runs on Windows, macOS, Linux. A role-based multi-agent framework under MIT, with a cloud product that has a trial for hosted runs. Role-based design fits some tasks better than others.

    Best for Teams of role-based agents

    Command lineWindowsmacOSLinuxFree and open sourceOpen source

    84.5of 100
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  7. OpenAI Agents SDK

    Also runs on Windows, macOS, Linux. A lightweight MIT-licensed multi-agent SDK published by OpenAI, with documentation on its own site. Its scope is narrower than full platforms such as LangChain.

    Best for Lightweight multi-agent workflows in Python

    WindowsmacOSLinuxFree and open sourceOpen source

    84.0of 100
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  8. Microsoft Agent Framework

    MIT-licensed SDK for Python and .NET covering agents, middleware and multi-agent workflows. Its strongest path runs through Azure and Microsoft Foundry, and its tutorials go from one agent to full workflows.

    Best for Teams building agents on Azure and .NET

    Self-hostedFree and open sourceOpen source

    83.0of 100
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  9. smolagents

    A small Apache 2.0 library in which agents act by writing code, so the whole loop is easy to read. Its ecosystem is smaller, and code-running agents need careful sandboxing.

    Best for Readable code agents on Hugging Face models

    Self-hostedFree and open sourceOpen source

    80.5of 100
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  10. itsfully.online*

    Also runs on Web. A toolbox of 145 small browser and AI tools as ES modules, with a public JSON manifest for agents. It is a set of utilities rather than an agent framework, and 90 of its tools process input on the server.

    Best for Calling ready-made utilities from agent code

    WebFree plan, paid upgrades

    62.5of 100
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  11. YJTOON*

    Also runs on Web. CC0 datasets that agent code can fetch from one URL as JSON, YAML or TOON, with no API key. It is a data source, not a framework, and the 32% token saving is the site's own figure, so it ranks below itsfully.online's tools.

    Best for Reference datasets for agent code

    WebFree

    60.5of 100
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About LlamaIndex alternatives

What is the best alternative to LlamaIndex?
On listme.name the highest-scored alternative is LangChain, followed by LangGraph. The right choice depends on price, platform and whether you need open source.
Is there a free alternative to LlamaIndex?
Yes. Free options include LangChain, LangGraph, Pydantic AI.

Before you switch

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Made by, or connected to, the publisher of this site or people the publisher works with. Listed on the same criteria as everything else, with the lift described in How we rank and Disclosure.