LangChain vs LlamaIndex
Head-to-head adoption data comparison based on real metrics
Data updated daily — latest collection:
VS
🦜
LangChain
Framework
Monthly Downloads
9.1M
Total: 9.1M
GitHub Stars
136,758
Forks
22,617
Open Issues
587
Description
Framework for building applications powered by large language models
🦙
LlamaIndex
Framework
Monthly Downloads
511.7K
Total: 511.7K
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 | 9.1M Leader | 511.7K |
| GitHub Stars | 136,758 Leader | 44,083 |
| GitHub Forks | 22,617 Leader | 6,336 |
| Open Issues | 587 Leader | 270 |
| Community Mentions | 0 | 0 |
Summary
LangChain leads in downloads with 18x more monthly downloads than LlamaIndex, while LangChain leads in community popularity with 210% 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 daily from NPM, PyPI, GitHub, benchmark leaderboards, and pricing data sources. Download counts reflect cumulative totals and weekly/monthly snapshots from the most recent scraper run. All data is publicly verifiable.
Latest data collection: (scrapers run daily)
Sources: NPM Registry API, PyPI API, GitHub API, SWE-bench, Official Pricing Pages