LangChain
Open-source framework/SDK for building LLM applications and agents from chainable components with broad provider and tool integrations. Not an end-user CLI agent.
Overview
| Vendor | LangChain, Inc. |
|---|---|
| License | MIT |
| Latest version | Langchain core 1.4.71.4.7 (2026-06-12); monorepo of versioned packages |
| GitHub stars | 140000APPROX snapshot |
| Language | Python, TypeScriptPython core; langchainjs for TS |
| Interface | SDK, API |
| Pricing | OSS + paid cloudFramework is OSS; LangSmith / LangGraph Platform are paid |
Agent capabilities
| Topology | —Framework — supports building single, graph (LangGraph), and multi-agent topologies |
|---|---|
| Planning | — |
| Tool calling | Native function callingNative + JSON-schema + MCP |
| Extensibility | SDK, Custom tools, Mcp servers, Plugins |
| Memory | —Configurable (buffer/summary/vector/etc.) |
| Code execution | Via pluginVia tools/integrations you wire up |
| Browser/computer use | Via plugin |
| MCP | Native |
| Multimodal | Text, Vision, Audio, FileModel-dependent |
Models
| Model-agnostic | Yes |
|---|---|
| Providers | OpenAI, Anthropic, Google, Azure OpenAI, AWS Bedrock, Mistral, Cohere, Ollama, OtherHundreds via integration packages |
| Local models | FullOllama/vLLM/local via integrations |
| BYO key | Yes |
Self-hosting
| Self-host difficulty | —Not applicable — framework/SDK with no standalone agent process; difficulty belongs to the app you build with it |
|---|---|
| Deploy | Native, Docker, Serverless, KubernetesLibrary — deploy however the host app is deployed |
| Scaling | Horizontal statelessDepends on host app |
| Config complexity | — |
| Min vCPU (measured) | —FIRST-PARTY: app-dependent |
| Min RAM (measured) | —FIRST-PARTY: app-dependent |
| Idle RAM (measured) | — |
| Infra cost | —FIRST-PARTY: app-dependent |
| One-click on AgentOcean | —FIRST-PARTY: as a framework, clarify what 'one-click' means here |
Project health
| Maturity | Production1.x line |
|---|---|
| Maintenance | Active |
| Release cadence | WeeklyEstimate; frequent package releases |
| Docs | Good |
| Community | Large |
A dash (—) marks a value we have not yet verified first-hand. Record last verified 2026-06-17.
Run LangChain on your own VPS
Grab a hardened AgentOcean VPS and self-host LangChain with full root access — always on, no laptop required.