LangChain with BigModel.io: models and setup

Framework for LLM apps and agents. Use ChatOpenAI with a custom base URL, or ChatAnthropic.

Create an API key Setup guide

Who it is for

Developers calling models from their own code with an official SDK or an LLM framework.

Website: www.langchain.com

Set up LangChain in three steps

Create an API key in the BigModel.io console. Give it a spend limit if the app runs unattended.
Add an OpenAI-compatible provider with base URL https://bigmodel.io/v1 and paste the key.
Copy a model ID from the model directory and add it to the app.

OpenAI base URL: https://bigmodel.io/v1
API key: sk-...

The full guide covers model choice, limits and common errors. LangChain guide →

Models to try

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