LangChain vs LlamaIndex
Head-to-head adoption data comparison based on real metrics
VS
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LangChain
Framework
Monthly Downloads
7.2M
Total: 7.2M
GitHub Stars
127,223
Forks
20,914
Open Issues
384
Description
Framework for building applications powered by large language models
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LlamaIndex
Framework
Monthly Downloads
344.3K
Total: 344.3K
GitHub Stars
44,083
Forks
6,336
Open Issues
270
Description
Data framework for LLM applications with RAG and agents
Side-by-Side Metrics
| Metric | LangChain | LlamaIndex |
|---|---|---|
| Monthly Downloads | 7.2M Leader | 344.3K |
| GitHub Stars | 127,223 Leader | 44,083 |
| GitHub Forks | 20,914 Leader | 6,336 |
| Open Issues | 384 Leader | 270 |
| Community Mentions | 0 | 0 |
Summary
LangChain leads in downloads with 21x more monthly downloads than LlamaIndex, while LangChain leads in community popularity with 189% more GitHub stars than LlamaIndex.
Historical Comparison
See how this comparison has changed over the last 30, 60, and 90 days with download and star trends plotted over time.
Unlock with Professional PlanAbout This Data
This comparison uses real adoption metrics collected from NPM, PyPI, GitHub, benchmark leaderboards, and pricing data sources. All data is publicly verifiable and updated daily.
Data collected:
Sources: NPM Registry API, PyPI API, GitHub API, SWE-bench, Official Pricing Pages