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Overview

Claude Dev is a VS Code AI coding extension suited for Claude-style code explanation, refactoring suggestions, and multi-turn collaboration through Crazyrouter. For public docs, prefer the OpenAI Compatible route first because it is more consistent with the rest of the Crazyrouter integration stack and easier to troubleshoot.
1

Install Extension

Search for Claude Dev in the VS Code extension marketplace and install it.
2

Open Settings

Click the Claude Dev icon in the sidebar to enter settings.
3

Select Provider

Prefer OpenAI Compatible as the API provider.
4

Enter Configuration

  • Base URL: https://crazyrouter.com/v1
  • API Key: sk-xxx
  • Model: claude-sonnet-4-6
ScenarioModel
Daily codingclaude-sonnet-4-6
Heavier reasoning and planningclaude-opus-4-6-thinking
claude-sonnet-4-6 and claude-opus-4-6-thinking match the latest verified Claude model guidance in this doc set. For the smallest first-pass VS Code validation, start with claude-sonnet-4-6.