claude-code-settings

Claude Code with LLM Gateway (LiteLLM) as Model Provider

Guidance for how to connect LiteLLM as an LLM Gateway for Claude Code.

NOTICE: LiteLLM provides a unified interface to 100+ LLMs, including Claude models through Anthropic, Bedrock, and Vertex AI. This allows you to use Claude Code with any LLM provider supported by LiteLLM while maintaining full compatibility.

1) Install Claude Code and Deploy LiteLLM Proxy

npm install -g @anthropic-ai/claude-code
pip install -U 'litellm[proxy]'

2) Configure and Start LiteLLM Proxy

Create a LiteLLM config file litellm_config.yaml with GitHub Copilot as the examples:

general_settings:
  master_key: sk-dummy
litellm_settings:
  drop_params: true
model_list:
- model_name: claude-opus-4.6
  model_info:
    supports_vision: true
    max_input_tokens: 128000
    max_output_tokens: 16384
  litellm_params:
    model: github_copilot/claude-opus-4.6
    drop_params: true
    extra_headers:
      editor-version: "vscode/1.95.0"
      editor-plugin-version: "copilot-chat/0.26.7"
- model_name: "claude-opus-4.6[1m]"
  model_info:
    supports_vision: true
    max_input_tokens: 1000000
    max_output_tokens: 16384
  litellm_params:
    model: github_copilot/claude-opus-4.6-1m
    drop_params: true
    extra_headers:
      editor-version: "vscode/1.95.0"
      editor-plugin-version: "copilot-chat/0.26.7"
- model_name: claude-opus-4.6-fast
  model_info:
    supports_vision: true
    max_input_tokens: 128000
    max_output_tokens: 16384
  litellm_params:
    model: github_copilot/claude-opus-4.6-fast
    drop_params: true
    extra_headers:
      editor-version: "vscode/1.95.0"
      editor-plugin-version: "copilot-chat/0.26.7"
- model_name: gpt-5.3-codex
  model_info:
    mode: responses
    supports_vision: true
    max_input_tokens: 128000
    max_output_tokens: 16384
  litellm_params:
    model: github_copilot/gpt-5.3-codex
    drop_params: true
    extra_headers:
      editor-version: "vscode/1.95.0"
      editor-plugin-version: "copilot-chat/0.26.7"
- model_name: gpt-5.2
  model_info:
    mode: responses
    supports_vision: true
    max_input_tokens: 128000
    max_output_tokens: 16384
  litellm_params:
    model: github_copilot/gpt-5.2
    drop_params: true
    extra_headers:
      editor-version: "vscode/1.95.0"
      editor-plugin-version: "copilot-chat/0.26.7"
- model_name: gpt-5.4
  model_info:
    mode: responses
    supports_vision: true
    max_input_tokens: 128000
    max_output_tokens: 16384
  litellm_params:
    model: github_copilot/gpt-5.4
    drop_params: true
    extra_headers:
      editor-version: "vscode/1.95.0"
      editor-plugin-version: "copilot-chat/0.26.7"
- model_name: claude-sonnet-4.6
  model_info:
    supports_vision: true
    max_input_tokens: 128000
    max_output_tokens: 16384
  litellm_params:
    model: github_copilot/claude-sonnet-4.6
    drop_params: true
    extra_headers:
      editor-version: "vscode/1.95.0"
      editor-plugin-version: "copilot-chat/0.26.7"
- model_name: "*"
  model_info:
    supports_vision: true
    max_input_tokens: 128000
    max_output_tokens: 16384
  litellm_params:
    model: "github_copilot/*"
    extra_headers:
      editor-version: "vscode/1.95.0"
      editor-plugin-version: "copilot-chat/0.26.7"

Start the LiteLLM proxy:

litellm -c litellm_config.yaml

Once started, you’ll see:

...
Please visit https://github.com/login/device and enter code XXXX-XXXX to authenticate.
...

Open the link, login and authenticate your GitHub Copilot account.

3) Create Claude Code configure file ~/.claude/settings.json with the following contents

{
  "env": {
    "ANTHROPIC_BASE_URL": "http://localhost:4000",
    "ANTHROPIC_AUTH_TOKEN": "sk-dummy",
    "ANTHROPIC_MODEL": "claude-opus-4.6[1m]",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "claude-sonnet-4.6",
    "DISABLE_NON_ESSENTIAL_MODEL_CALLS": "1",
    "DISABLE_TELEMETRY": "1",
    "CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC": "1"
  }
}

4) Run claude

Open another terminal and then run claude at your will. DO read its best practices for fully leveraging its capabilities.

Alternative configurations

Using Environment Variables Directly

export ANTHROPIC_BASE_URL="http://localhost:4000"
export ANTHROPIC_AUTH_TOKEN="sk-dummy"
export ANTHROPIC_MODEL="claude-opus-4.6[1m]"
export ANTHROPIC_DEFAULT_HAIKU_MODEL="claude-sonnet-4.6"
export DISABLE_TELEMETRY="1"
export DISABLE_NON_ESSENTIAL_MODEL_CALLS="1"
export CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC="1"

claude

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