langchain
Very Popular
Version 1.2.28
85
ExcellentTypescript bindings for langchain
- Weekly Downloads
- 1.9M
↑33%
- Bundle (gzip)
- 791.8 KB
- Updated
- Vulns
- 0
Health Score Breakdown
Maintenance
100
Popularity
100
Quality
50
Security
100
Stability
70
Langchain vs Llamaindex
Side-by-side NPM package comparison
llamaindex
Popular
Version 0.12.1
75
Good<p align="center"> <img height="100" width="100" alt="LlamaIndex logo" src="https://ts.llamaindex.ai/square.svg" /> </p> <h1 align="center">LlamaIndex.TS</h1> <h3 align="center"> Data framework for your LLM application. </h3>
- Weekly Downloads
- 103.7K
- Bundle (gzip)
- 285.3 KB
- Updated
- Vulns
- 0
Health Score Breakdown
Maintenance
80
Popularity
80
Quality
50
Security
100
Stability
70
Choosing between Langchain and Llamaindex? Here's a data-driven comparison based on real npm data — downloads, bundle size, health scores, and more — to help you decide which package fits your project best.
Downloads & Popularity
Langchain leads with 1.9M weekly downloads — roughly 17.9x more. Llamaindex has 103.7K weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.
Bundle Size
Llamaindex has the smallest gzipped bundle at 285.3 KB. Langchain comes in at 791.8 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.
Health Score Comparison
Langchain has an overall health score of 85/100 (very good), with strong maintenance, security, popularity scores. Llamaindex has an overall health score of 75/100 (very good), with strong maintenance, security, popularity scores. Health scores are calculated from maintenance activity, code quality, security posture, popularity, and stability metrics.
When to Choose Each
Choose Langchain if you value large community support, actively maintained, strong security track record. Choose Llamaindex if you value strong security track record.
Our Verdict
Both Langchain and Llamaindex are solid choices for JavaScript development. Langchain has the edge in overall health score (85/100), while each package brings unique strengths to the table. Evaluate them based on your project's priorities — whether that's community size, bundle efficiency, or maintenance activity — and choose the one that aligns best with your requirements.
Frequently Asked Questions
- Is langchain better than llamaindex?
- It depends on your needs. Langchain has a health score of 85/100 while Llamaindex scores 75/100. Langchain has more weekly downloads (1.9M), suggesting broader adoption. Consider your specific requirements — bundle size, community support, and feature set — to decide which is the better fit.
- Which has a smaller bundle size, langchain or llamaindex?
- Llamaindex has the smaller gzipped bundle at 285.3 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
- How many developers use langchain vs llamaindex?
- Based on npm download statistics, Langchain has approximately 1.9M weekly downloads and Llamaindex has approximately 103.7K weekly downloads. These numbers reflect package installations, not unique developers, but they indicate relative adoption levels.
- Which is better maintained, langchain or llamaindex?
- Langchain currently has the higher overall health score at 85/100. Langchain has a maintenance score of 100/100 and Llamaindex scores 80/100 on maintenance.