How to Connect Claude Code to DeepSeek‑V3.1 for AI‑Powered Coding

Overview

DeepSeek released the DeepSeek‑V3.1 model, expanding the context window from 64 k to 128 k tokens and improving coding capabilities, inference speed, and agent functions. The model now supports the Anthropic API format, enabling easy integration with Claude Code.

Installation

Install the official Claude Code CLI and the open‑source ClaudeCodeRouter that proxies requests to other providers.

npm install -g @anthropic/ai/claude-code

npm install -g @musistudio/claude-code-router

Configuration

Configure ClaudeCodeRouter to point to a provider such as Qiniu’s AI inference service. Edit the file C:\Users\Administrator\.claude-code-router\config.json (Windows) with the following JSON (trimmed for brevity):

{
  "Providers": [
    {
      "name": "qiniu",
      "api_base_url": "https://openai.qiniu.com/v1/chat/completions",
      "api_key": "YOUR_QINIU_API_KEY",
      "models": [
        "deepseek-v3.1",
        "nvidia/llama-3.3-nemotron-super-49b-v1.5",
        "gpt-oss-120b"
      ],
      "transformer": {
        "use": [],
        "deepseek-v3.1": {
          "use": [
            ["maxtoken", { "max_tokens": 8192 }]
          ]
        }
      }
    }
  ],
  "Router": {
    "default": "qiniu,deepseek-v3.1",
    "background": "qiniu,deepseek-v3.1",
    "think": "qiniu,deepseek-v3.1",
    "longContext": "qiniu,deepseek-v3.1",
    "longContextThreshold": 60000,
    "webSearch": "qiniu,deepseek-v3.1"
  }
}

Usage

From your project directory run:

cd my--webman-project
ccr code

The UI can be launched with ccr ui and the service restarted with ccr restart.

Troubleshooting

Problem 1: Failed to connect to api.anthropic.com: ERR_BAD_REQUEST Solution: Enable proxy mode (e.g., TUN simulation).

Problem 2: Claude Code on Windows requires git‑bash. Solution: Install git‑bash and set the environment variable CLAUDE_CODE_GIT_BASH_PATH to the path of bash.exe , e.g., D:\Program Files\Git\bin\bash.exe .