LibreChat/docs/install/configuration/litellm.md

title	description	weight
🚅 LiteLLM	Using LibreChat with LiteLLM Proxy	-7

Using LibreChat with LiteLLM Proxy

Use LiteLLM Proxy for:

• Calling 100+ LLMs Huggingface/Bedrock/TogetherAI/etc. in the OpenAI ChatCompletions & Completions format
• Load balancing - between Multiple Models + Deployments of the same model LiteLLM proxy can handle 1k+ requests/second during load tests
• Authentication & Spend Tracking Virtual Keys

Start LiteLLM Proxy Server

Pip install litellm

pip install litellm

Create a config.yaml for litellm proxy

More information on LiteLLM configurations here: docs.litellm.ai/docs/simple_proxy

model_list:
  - model_name: gpt-3.5-turbo
    litellm_params:
      model: azure/gpt-turbo-small-eu
      api_base: https://my-endpoint-europe-berri-992.openai.azure.com/
      api_key: 
      rpm: 6      # Rate limit for this deployment: in requests per minute (rpm)
  - model_name: gpt-3.5-turbo
    litellm_params:
      model: azure/gpt-turbo-small-ca
      api_base: https://my-endpoint-canada-berri992.openai.azure.com/
      api_key: 
      rpm: 6
  - model_name: gpt-3.5-turbo
    litellm_params:
      model: azure/gpt-turbo-large
      api_base: https://openai-france-1234.openai.azure.com/
      api_key: 
      rpm: 1440

Start the proxy

litellm --config /path/to/config.yaml

#INFO: Proxy running on http://0.0.0.0:8000

Use LiteLLM Proxy Server with LibreChat

1. Clone the repo

git clone https://github.com/danny-avila/LibreChat.git

2. Modify Librechat's docker-compose.yml

OPENAI_REVERSE_PROXY=http://host.docker.internal:8000/v1/chat/completions

Important: As of v0.6.6, it's recommend you use the librechat.yaml Configuration file (guide here) to add Reverse Proxies as separate endpoints.

3. Save fake OpenAI key in Librechat's .env

Copy Librechat's .env.example to .env and overwrite the default OPENAI_API_KEY (by default it requires the user to pass a key).

OPENAI_API_KEY=sk-1234

4. Run LibreChat:

docker compose up

---

Why use LiteLLM?

1. Access to Multiple LLMs: It allows calling over 100 LLMs from platforms like Huggingface, Bedrock, TogetherAI, etc., using OpenAI's ChatCompletions and Completions format.

2. Load Balancing: Capable of handling over 1,000 requests per second during load tests, it balances load across various models and deployments.

3. Authentication & Spend Tracking: The server supports virtual keys for authentication and tracks spending.

Key components and features include:

• Installation: Easy installation.
• Testing: Testing features to route requests to specific models.
• Server Endpoints: Offers multiple endpoints for chat completions, completions, embeddings, model lists, and key generation.
• Supported LLMs: Supports a wide range of LLMs, including AWS Bedrock, Azure OpenAI, Huggingface, AWS Sagemaker, Anthropic, and more.
• Proxy Configurations: Allows setting various parameters like model list, server settings, environment variables, and more.
• Multiple Models Management: Configurations can be set up for managing multiple models with fallbacks, cooldowns, retries, and timeouts.
• Embedding Models Support: Special configurations for embedding models.
• Authentication Management: Features for managing authentication through virtual keys, model upgrades/downgrades, and tracking spend.
• Custom Configurations: Supports setting model-specific parameters, caching responses, and custom prompt templates.
• Debugging Tools: Options for debugging and logging proxy input/output.
• Deployment and Performance: Information on deploying LiteLLM Proxy and its performance metrics.
• Proxy CLI Arguments: A wide range of command-line arguments for customization.

Overall, LiteLLM Server offers a comprehensive suite of tools for managing, deploying, and interacting with a variety of LLMs, making it a versatile choice for large-scale AI applications.