Claude Code with BigModel.io: models and setup

Anthropic's agentic coding tool for the terminal. Point it at the Anthropic-compatible API with two environment variables.

Create an API keySetup guide

Who it is for

Developers who let an agent read, write and run code in a terminal or editor. Agents send long contexts and many tool calls, so per-key spend limits are worth setting.

Website: www.anthropic.com

Set up Claude Code in three steps

  1. Create an API key in the BigModel.io console. Give it a spend limit if the app runs unattended.
  2. Set the Anthropic base URL to https://bigmodel.io (without /v1) and use the key as the auth token.
  3. Choose a model that lists the Anthropic Messages API in the model directory and set its ID.
Anthropic base URL
https://bigmodel.io
API key
sk-...

Prefer one click? CC Switch can switch Claude Code and Codex to BigModel.io from the API Keys page. CC Switch guide

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

Models to try

Related apps

Codex CLIOpenAI's open-source coding agent for the terminal. Add BigModel.io as a provider that uses the Responses API.CursorAI code editor. Override the OpenAI base URL and add model IDs by hand.ClineOpen-source coding agent for VS Code. Use the OpenAI Compatible provider.