LangChain vs LlamaIndex
LangChain leads in package downloads at 23x; LangChain has raised more funding at $35M; LlamaIndex leads in active contributors with 72 (30d); LangChain leads in npm dependents with 1.6K; both compete in Foundation Models. Updated daily with live metrics.
Key Differences
LangChain leads in package downloads with 230.4M per month compared to 10.1M for LlamaIndex. LangChain has 128.5K GitHub stars versus 47.4K for LlamaIndex. LlamaIndex attracted 72 contributors in the last 30 days compared to 37 for LangChain. LangChain is depended on by 1.6K npm packages versus 111 for LlamaIndex.
LangChain has raised $35M in total funding, while LlamaIndex has raised $85K. LangChain's most recent round was Series A, while LlamaIndex's most recent round was Seed. both companies operate in the Foundation Models category.
LangChain received 206 Hacker News mentions in the last 30 days compared to 16 for LlamaIndex. LangChain accounts for 3.2% of Hacker News discussion in its category.
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LangChain: 230.4M downloads/mo, 128.5K GitHub stars, 37 active contributors, 1.6K dependents, $35M funded vs
LlamaIndex: 10.1M downloads/mo, 47.4K GitHub stars, 72 active contributors, 111 dependents, $85K funded
Source: AI-Buzz AI company database.
- •LangChain leads in package downloads with 230.4M/mo (23x LlamaIndex)
- •LangChain has 128.5K GitHub stars (3x more)
- •LlamaIndex has 72 active contributors (30d) (2x LangChain)
- •LangChain has 1.6K npm dependents (14x more than LlamaIndex)
- •LangChain has raised more funding at $35M
← Scroll to compare →
| Metric | LangChain | LlamaIndex |
|---|---|---|
| Website | langchain.com → | llamaindex.ai → |
| Description | Framework for building LLM-powered applications. Chains, agents, RAG. | Framework for building LLM applications with RAG. Data framework for AI. |
| Total Funding | $35M✓ | $85K |
| Last Funding | Series A Feb 2024 | Seed Jun 2023 |
| Developer Adoption | ||
| npm Downloads (30d) Source: npm registryUpdates: DailyNote: Only tracks npm, not yarn/pnpm installs | 7.7M✓ | 420.3K |
| PyPI Downloads (30d) Source: PyPI (pypistats.org)Updates: Daily | 222.7M✓ | 9.7M |
| Total Downloads (30d) | 230.4M+0%✓ | 10.1M+0% |
| Active Contributors (30d) Source: GitHub APIUpdates: Daily | 37 | 72✓ |
| npm Dependents Source: Libraries.io APIUpdates: DailyNote: Counts direct and dev dependents | 1.6K✓ | 111 |
| HN Discussion Share | 3.2% of HN mentions | 0.2% of HN mentions |
| Status | Private | Private |
| HN Mentions (30d) Source: Hacker News (Algolia API)Updates: Daily | 206✓ | 16 |
| HN Mentions Trend (30d) | - | - |
| GitHub Stars Source: GitHub APIUpdates: Daily | 128.5K✓ | 47.4K |
| Founded | 2022 | 2022 |
| Primary Category | ||
| Data Last Updated | ||
Key Differences: LangChain vs LlamaIndex
In developer adoption, LangChain leads with 230.4M package downloads per month — roughly 23x the 10.1M downloads LlamaIndex receives. Both companies have packages on npm and PyPI.
LangChain has raised $35M in total funding compared to LlamaIndex's $85K. LangChain's latest round was a Series A in 2024, while LlamaIndex's latest round was a Seed in 2023.
On GitHub, LangChain has 128.5K GitHub stars, 3x more than LlamaIndex's 47.4K, and both have active contributor communities (LangChain: 37, LlamaIndex: 72 in the last 30 days).
In community signals, LangChain leads in Hacker News mindshare with 206 mentions in the past 30 days compared to 16 for LlamaIndex. Also, LangChain has 1.6K npm dependents (14x more), indicating deeper ecosystem integration.
Both LangChain and LlamaIndex operate in the Foundation Models space, making them direct competitors for developer mindshare.
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