Company research
As of May 18, 2026
Hacker News mentions decreased 28.1% over the last 30 days. Hacker News is discussion volume, not adoption.
LangChain
Framework for building LLM-powered applications. Chains, agents, RAG.
Developer ToolsFounded January 2022#2 of 12 in Developer Tools
Updated May 29, 2026
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Company profile
What is LangChain?
LangChain is the most popular framework for building with LLMs. Enables chains, agents, and retrieval-augmented generation. 100K+ GitHub stars. Raised $25M Series A from Sequoia.
History
Research history
3 research updates
Developer Tools
LangChain: Hacker News mentions decreased 28.1% over the last 30 days
LatestDeveloper Tools
LangChain: Hacker News mentions decreased 29% over the last 30 days
1 metricDeveloper Tools
LangChain: Hacker News mentions decreased 35.5% over the last 30 days
1 metricLatest company data
Primary data point
Downloads
378.8M/30d
- npm
- 30.1M
- PyPI
- 348.7M
4 tracked packages in npm and PyPI
▲ +28%npm + PyPI: Updated 1d ago
Other data points
Dependent projects
7.7K
- npm
- 2.0K
- PyPI
- 5.8K
Projects depending on 4 tracked packages in npm and PyPI
npm + PyPI: Updated 9h ago
GitHub stars
137.9K
Main repository stars
Updated 9h ago
Hacker News
62/30d
Position #4 in category discussion
Updated 9h ago
Repository health
Maintenance data from the main open-source repository.
OpenSSF ScorecardSource: OpenSSF ScorecardUpdates: WeeklyCaveat: Score 0–10 across security practices; not all checks apply to every repoMethodology →
6.7
Key-person riskSource: GitHub public event dataUpdates: WeeklyCaveat: Minimum developers needed for half of recent code changes. Lower = higher concentration risk.Methodology →
1
External contributorsSource: GitHub public event dataUpdates: WeeklyCaveat: Based on push events; may undercount contributors who only open PRsMethodology →
43
% of recent contributors outside the core team
Releases (30d)Source: GitHub release dataUpdates: WeeklyCaveat: Published releases in the last 30 daysMethodology →
0
Repository usage
Public repositories and source files importing packages tied to LangChain.
Repos importingMetric: Public GitHub repos using company packagesSource: ecosyste.ms Packages APIScope: UTC daily snapshotUpdates: DailyFreshness: 48h target; 48h expected source lagConfidence: HighCaveat: Public GitHub dependency data only; private repos and direct API use outside those packages are not visible.Methodology →
25.3K▲ +17%
About LangChain
LangChain is the most popular framework for building with LLMs. Enables chains, agents, and retrieval-augmented generation. 100K+ GitHub stars. Raised $25M Series A from Sequoia.
FounderHarrison Chase
Funding
$35M · 2 roundsRaised $35M total. Category position #2 of 12 in Developer Tools.
Series A2024
$25MSequoia Capital
Seed2023
$10MBenchmark
Investors
BenchmarkSequoia Capital
Tracked packages (4)
2 npm, 2 PyPI
langchain
npmMain npm packagelangchain
Framework for building LLM-powered applications. Chains, agents, RAG.
langchain
PyPIMain PyPI packagelangchain
Framework for building LLM-powered applications. Chains, agents, RAG.
langsmith
npmlangsmith
A developer platform for debugging, testing, evaluating, and monitoring LLM applications, enhancing reliability and performance.
langsmith
PyPIlangsmith
A developer platform for debugging, testing, evaluating, and monitoring LLM applications, enhancing reliability and performance.