LiteLLM API Gateway

One-click deploy of LiteLLM on Railway -- a universal API gateway for 100+ LLM providers with OpenAI-compatible endpoints, spend tracking, rate limiting, and load balancing.

Services Included

• LiteLLM Proxy -- API gateway with admin UI, virtual keys, and usage analytics
• PostgreSQL -- Stores API keys, spend logs, model configurations, and user data
• Redis -- Response caching and rate limiting

Environment Variables

Required

Variable	Description	Default
LITELLM_MASTER_KEY	Admin API key (must start with sk-)	Auto-generated
LITELLM_SALT_KEY	Encryption key for stored API keys (do not change after setup)	Auto-generated
DATABASE_URL	PostgreSQL connection string	Auto-configured

LLM Provider Keys (add the ones you need)

Variable	Description
OPENAI_API_KEY	OpenAI API key
ANTHROPIC_API_KEY	Anthropic API key
AZURE_API_KEY	Azure OpenAI API key
AZURE_API_BASE	Azure OpenAI endpoint URL
COHERE_API_KEY	Cohere API key
MISTRAL_API_KEY	Mistral API key
GROQ_API_KEY	Groq API key
GEMINI_API_KEY	Google Gemini API key
AWS_ACCESS_KEY_ID	AWS access key (for Bedrock)
AWS_SECRET_ACCESS_KEY	AWS secret key (for Bedrock)
AWS_REGION_NAME	AWS region (for Bedrock)

Optional

Variable	Description	Default
REDIS_HOST	Redis hostname	Auto-configured
REDIS_PORT	Redis port	Auto-configured
REDIS_PASSWORD	Redis password	Auto-configured
NUM_WORKERS	Number of proxy workers	(auto)
STORE_MODEL_IN_DB	Store model config in database	True

Post-Deployment

1. Visit your LiteLLM URL to access the Admin UI
2. Log in with your LITELLM_MASTER_KEY
3. Add models via the UI or API (models are stored in the database when STORE_MODEL_IN_DB=True)
4. Create virtual API keys for your applications
5. Point your apps to https://your-litellm-url/v1/ as the OpenAI base URL

Adding Models

Via Admin UI

Navigate to your LiteLLM URL and use the model management interface.

Via API

curl -X POST https://your-litellm-url/model/new \
  -H "Authorization: Bearer sk-your-master-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model_name": "gpt-4o",
    "litellm_params": {
      "model": "openai/gpt-4o",
      "api_key": "sk-your-openai-key"
    }
  }'

Via Config File

Edit config.yaml in the repo and redeploy.

Links

• LiteLLM Documentation
• Supported Providers
• Source Code