LangChain is the most popular framework for building applications powered by large language models. Chains, agents, memory, RAG, and tool use — all composable. Used by hundreds of thousands of developers building AI applications.
How LangChain compares with its closest alternatives
4 of the 5 closest alternatives have a free plan, as LangChain does. Among the 2 that list a starting price, the cheapest is SkillStack at $9.99 a month and the median is $17. 4 of the 5 offer an API, as LangChain does. LangChain was founded in 2022; the alternatives were founded between 2022 and 2025. LangChain is based in San Francisco, United States; all the 2 alternatives with a known headquarters are in the United States too.
Market position · Coding
How LangChain compares in Coding
LangChain has high opportunity and sits in the top third of 501 live Coding tools on FalcoScan. Across Coding, the average opportunity score is 60.4 and the average saturation score 44.4. FalcoScan rates LangChain's own market position as open. 154 of the 501 operating Coding tools have hot momentum, and FalcoScan has recorded 16 shutdowns in the category.
LangChain compared with its closest alternatives
Product
Opportunity
Saturation
Pricing
Pricing from
Free plan
API
Platforms
Momentum
LangChainFounded 2022 · San Francisco, United States
High
Open
Free
—
Yes
Yes
API
Hot
LlamaIndexFounded 2022 · San Francisco, United States
Moderate
Contested
Freemium
—
Yes
Yes
API
Stable
CorelayerFounded 2025 · San Francisco, United States
The closest alternatives to LangChain that are still running, matched on the AI capabilities, uses and audience they share, are LlamaIndex, Corelayer, IncidentFox, Orbi, and SkillStack.
Is LangChain still running?
Yes. As of 2 November 2026, FalcoScan lists LangChain as operating at langchain.com.
Where is LangChain based?
LangChain is headquartered in San Francisco, United States.
Does LangChain have an API?
Yes. LangChain offers an API.
Who is LangChain for?
LangChain is built for developers.
How do I sign in to LangChain?
Sign in on LangChain's own website, langchain.com. FalcoScan reviews LangChain but does not run its accounts, so logins, passwords and billing are handled by LangChain directly.