Static comparison

LangChain vs LlamaIndex

LangChain has the stronger current ToolVitals signal, but check fit, license class, hosted pricing evidence, and confidence before switching.

LangChain

The agent engineering platform

100

LlamaIndex is the leading document agent and OCR platform

Use case	AI Agent Tools	Web Frameworks
Openness	OSI-approved OSS	OSI-approved OSS
License	MIT	MIT
Health	100	98
Shipping	100	95
ToolVitals score	100	98
Data confidence	100	100
Source coverage	100	100
Hosted pricing	No hosted pricing tracked: No current pricing evidence	No hosted pricing tracked: No current pricing evidence
Status reason	Maintenance and shipping signals are strong.	Maintenance and shipping signals are strong.

Decision notes

Fit Different use cases

LangChain is tracked under AI Agent Tools, while LlamaIndex is tracked under Web Frameworks.

Score gap 2 points

The overall signal is close; license, pricing, and fit matter more than the headline score.

LangChain Best for OSI-approved open source and fast recent shipping

LangChain is tracked as OSI-approved open source with high confidence in ToolVitals data.

LlamaIndex Best for OSI-approved open source and fast recent shipping

LlamaIndex is tracked as OSI-approved open source with high confidence in ToolVitals data.

Which has the stronger ToolVitals signal, LangChain or LlamaIndex?

LangChain has the stronger current ToolVitals signal, but check fit, license class, hosted pricing evidence, and confidence before switching.

Are LangChain and LlamaIndex direct alternatives?

Not exactly. ToolVitals classifies them in different use cases, so use this page as a public-signal comparison before checking workflow fit.

Do sponsors affect this comparison?

No. Sponsors and affiliate links do not affect ToolVitals scores, rankings, risk labels, or evidence display.

Affiliate CTAs, when present, use sponsored links and never affect scores, rankings, risk labels, evidence freshness, or comparison verdicts.