Use Modellix LLM with Qwen Code

Configure Qwen Code to call the Modellix LLM gateway. Qwen Code supports OpenAI-compatible endpoints through environment variables or modelProviders in settings.json, pointed at Chat Completions on POST /v1/chat/completions.

This page covers LLM text only (https://llm.modellix.ai).Modellix model IDs are provider/name (for example openai/gpt-5.5). Set that full string as OPENAI_MODEL or as each modelProviders model id. See Models & Pricing.

Set Up Qwen Code

Install Qwen Code

Requires Node.js 20+. Install the global CLI:

npm install -g @qwen-code/qwen-code
qwen --version

Set Environment Variables

Point the OpenAI-compatible client at Modellix (same pattern as the OpenAI SDK):

export OPENAI_API_KEY="mdlx-xxxxxxxx"
export OPENAI_BASE_URL="https://llm.modellix.ai/v1"
export OPENAI_MODEL="openai/gpt-5.5"

Add these lines to your shell profile (for example ~/.zshrc), then run source ~/.zshrc.

Setting	Value
`OPENAI_API_KEY`	Modellix API Key from the console
`OPENAI_BASE_URL`	`https://llm.modellix.ai/v1` (include `/v1`)
`OPENAI_MODEL`	Exact Modellix Model ID (`provider/name`)

Use a Modellix API key, not an OpenAI platform key. Do not set OPENAI_BASE_URL to the media API host (https://api.modellix.ai).

Optional: Persist in settings.json

For multiple models or a durable project/user config, declare Modellix under the openai auth type in ~/.qwen/settings.json (or .qwen/settings.json in a project):

{
  "env": {
    "MODELLIX_API_KEY": "mdlx-xxxxxxxx"
  },
  "modelProviders": {
    "openai": {
      "protocol": "openai",
      "models": [
        {
          "id": "openai/gpt-5.5",
          "name": "GPT 5.5",
          "baseUrl": "https://llm.modellix.ai/v1",
          "envKey": "MODELLIX_API_KEY"
        },
        {
          "id": "anthropic/claude-sonnet-5",
          "name": "Claude Sonnet 5",
          "baseUrl": "https://llm.modellix.ai/v1",
          "envKey": "MODELLIX_API_KEY"
        },
        {
          "id": "google/gemini-3.6-flash",
          "name": "Gemini 3.6 Flash",
          "baseUrl": "https://llm.modellix.ai/v1",
          "envKey": "MODELLIX_API_KEY"
        }
      ]
    }
  },
  "security": {
    "auth": {
      "selectedType": "openai"
    }
  },
  "model": {
    "name": "openai/gpt-5.5"
  }
}

Replace mdlx-xxxxxxxx with your Modellix API key, or keep the key only in the process environment and omit the env block. Credentials in modelProviders are read from process.env[envKey], not stored as plaintext API fields.

You do not need a separate Anthropic baseUrl without /v1 for these IDs. Register anthropic/... and google/... on the same Modellix OpenAI-compatible baseUrl; traffic goes through Chat Completions on https://llm.modellix.ai/v1. Native Anthropic Messages is for the Anthropic SDK and Claude Code.

Start Qwen Code

From your project directory:

qwen

Run /about to confirm the active model and endpoint. Use /model to switch among entries declared in modelProviders.

Troubleshooting

Symptom	Check
401 / auth errors	`OPENAI_API_KEY` or `MODELLIX_API_KEY` is a valid Modellix key
Model not found / 404	Model ID is a full string like `openai/gpt-5.5`, not bare `gpt-5.5`
Wrong path / URL errors	`OPENAI_BASE_URL` / `baseUrl` is `https://llm.modellix.ai/v1` (include `/v1`)
Still hitting OpenAI	Base URL is Modellix; `/about` shows the expected endpoint
Model missing in `/model`	Entry exists under `modelProviders.openai.models` with matching `envKey` set in the environment

Qwen Code model providers — modelProviders schema
Models & Pricing — Model IDs and rates
LLM API guide — protocols and curl examples
OpenAI SDK — same OPENAI_BASE_URL + /v1 pattern
OpenCode — another OpenAI-compatible coding agent setup

Get Started

API

Agent

SDK

Framework

IDE

Tool

Use Modellix LLM with Qwen Code

Set Up Qwen Code

Troubleshooting

​Set Up Qwen Code

​Troubleshooting

​Related

Set Up Qwen Code

Troubleshooting

Related