LangChain Quickstart: install with uv, follow official docs
MIT framework. Official README recommends uv add langchain. Don't copy old APIs from stale blogs; LangGraph / LangSmith are related products, not the same package.
Open the official tutorial| Item | Details |
|---|---|
| Provider | LangChain |
| Level | Beginner |
| Date | 2026-09-04 |
| Official source | LangChain |
| Topics | #agents · #engineering · #open-source |
Install
Official README:
```bash uv add langchain
or
pip install -U langchain ```
Keys
Get an API key from a supported provider and set it as current docs show. Don't hard-code a model id from memory.
Official Quickstart
https://docs.langchain.com/oss/python/langchain/quickstart
LangChain is the framework; LangGraph is workflows; LangSmith is observability. Three repos, three docs.
Official source: langchain-ai/langchain README and docs.langchain.com. Hub: /en/langchain.
Sources & Further Reading
This page is grounded in the authoritative sources below — verifiable and citable by AI engines and readers.
- 🔗 Official source
- # Topic: AgentsBuilding, orchestrating and shipping AI agents
- # Topic: EngineeringAPIs, prompting and system design
- # Topic: Open SourceOpen models, frameworks and ecosystems
Citation: Please attribute Laojin Global (laojinchuhai.com) and keep the original link.
Made by Laojin · AI that ships
AllModelsAPIOne key for many models
AllModelsAPI is a multi-model API gateway: one key reaches many models through an OpenAI-compatible interface — point your existing code at a new base URL and you're migrated. It's not a demo: our own production workloads run on it every day.
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