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category

Call all LLM APIs using the OpenAI format. Use Bedrock, Azure, OpenAI, Cohere, Anthropic, Ollama, Sagemaker, HuggingFace, Replicate (100+ LLMs)

docs.litellm.ai/docs/

Call all LLM APIs using the OpenAI format [Bedrock, Huggingface, VertexAI, TogetherAI, Azure, OpenAI, etc.]

LiteLLM manages:

  • Translate inputs to provider's completionembedding, and image_generation endpoints
  • Consistent output, text responses will always be available at ['choices'][0]['message']['content']
  • Retry/fallback logic across multiple deployments (e.g. Azure/OpenAI) - Router
  • Set Budgets & Rate limits per project, api key, model OpenAI Proxy Server

Jump to OpenAI Proxy Docs
Jump to Supported LLM Providers

🚨 Stable Release: v1.34.1

Support for more providers. Missing a provider or LLM Platform, raise a feature request.

Usage (Docs)

 

Important

LiteLLM v1.0.0 now requires openai>=1.0.0. Migration guide here

Open In Colab

pip install litellm
from litellm import completion
import os

## set ENV variables
os.environ["OPENAI_API_KEY"] = "your-openai-key"
os.environ["COHERE_API_KEY"] = "your-cohere-key"

messages = [{ "content": "Hello, how are you?","role": "user"}]

# openai call
response = completion(model="gpt-3.5-turbo", messages=messages)

# cohere call
response = completion(model="command-nightly", messages=messages)
print(response)

Call any model supported by a provider, with model=<provider_name>/<model_name>. There might be provider-specific details here, so refer to provider docs for more information

Async (Docs)

 

from litellm import acompletion
import asyncio

async def test_get_response():
    user_message = "Hello, how are you?"
    messages = [{"content": user_message, "role": "user"}]
    response = await acompletion(model="gpt-3.5-turbo", messages=messages)
    return response

response = asyncio.run(test_get_response())
print(response)

Streaming (Docs)

 

liteLLM supports streaming the model response back, pass stream=True to get a streaming iterator in response.
Streaming is supported for all models (Bedrock, Huggingface, TogetherAI, Azure, OpenAI, etc.)

from litellm import completion
response = completion(model="gpt-3.5-turbo", messages=messages, stream=True)
for part in response:
    print(part.choices[0].delta.content or "")

# claude 2
response = completion('claude-2', messages, stream=True)
for part in response:
    print(part.choices[0].delta.content or "")

Logging Observability (Docs)

 

LiteLLM exposes pre defined callbacks to send data to Lunary, Langfuse, DynamoDB, s3 Buckets, Helicone, Promptlayer, Traceloop, Athina, Slack

from litellm import completion

## set env variables for logging tools
os.environ["LUNARY_PUBLIC_KEY"] = "your-lunary-public-key"
os.environ["LANGFUSE_PUBLIC_KEY"] = ""
os.environ["LANGFUSE_SECRET_KEY"] = ""
os.environ["ATHINA_API_KEY"] = "your-athina-api-key"

os.environ["OPENAI_API_KEY"]

# set callbacks
litellm.success_callback = ["lunary", "langfuse", "athina"] # log input/output to lunary, langfuse, supabase, athina etc

#openai call
response = completion(model="gpt-3.5-turbo", messages=[{"role": "user", "content": "Hi 👋 - i'm openai"}])

OpenAI Proxy - (Docs)

 

Set Budgets & Rate limits across multiple projects

The proxy provides:

  1. Hooks for auth
  2. Hooks for logging
  3. Cost tracking
  4. Rate Limiting

📖 Proxy Endpoints - Swagger Docs

 

Quick Start Proxy - CLI

 

pip install 'litellm[proxy]'

Step 1: Start litellm proxy

 

$ litellm --model huggingface/bigcode/starcoder

#INFO: Proxy running on http://0.0.0.0:4000

Step 2: Make ChatCompletions Request to Proxy

 

import openai # openai v1.0.0+
client = openai.OpenAI(api_key="anything",base_url="http://0.0.0.0:4000") # set proxy to base_url
# request sent to model set on litellm proxy, `litellm --model`
response = client.chat.completions.create(model="gpt-3.5-turbo", messages = [
    {
        "role": "user",
        "content": "this is a test request, write a short poem"
    }
])

print(response)

Proxy Key Management (Docs)

 

UI on /ui on your proxy server ui_3

Set budgets and rate limits across multiple projects POST /key/generate

Request

 

curl 'http://0.0.0.0:4000/key/generate' \
--header 'Authorization: Bearer sk-1234' \
--header 'Content-Type: application/json' \
--data-raw '{"models": ["gpt-3.5-turbo", "gpt-4", "claude-2"], "duration": "20m","metadata": {"user": "ishaan@berri.ai", "team": "core-infra"}}'

Expected Response

 

{
    "key": "sk-kdEXbIqZRwEeEiHwdg7sFA", # Bearer token
    "expires": "2023-11-19T01:38:25.838000+00:00" # datetime object
}

Supported Providers (Docs)

 

Provider Completion Streaming Async Completion Async Streaming Async Embedding Async Image Generation
openai
azure
aws - sagemaker  
aws - bedrock  
google - vertex_ai [Gemini]    
google - palm    
google AI Studio - gemini        
mistral ai api  
cloudflare AI Workers    
cohere  
anthropic    
huggingface  
replicate    
together_ai    
openrouter    
ai21    
baseten    
vllm    
nlp_cloud    
aleph alpha    
petals    
ollama    
deepinfra    
perplexity-ai    
Groq AI    
anyscale    
voyage ai          
xinference [Xorbits Inference]          

Read the Docs