Rerank

tip

LiteLLM Follows the cohere api request / response for the rerank api

LiteLLM Python SDK Usage

Quick Start

from litellm import rerank
import os

os.environ["COHERE_API_KEY"] = "sk-.."

query = "What is the capital of the United States?"
documents = [
    "Carson City is the capital city of the American state of Nevada.",
    "The Commonwealth of the Northern Mariana Islands is a group of islands in the Pacific Ocean. Its capital is Saipan.",
    "Washington, D.C. is the capital of the United States.",
    "Capital punishment has existed in the United States since before it was a country.",
]

response = rerank(
    model="cohere/rerank-english-v3.0",
    query=query,
    documents=documents,
    top_n=3,
)
print(response)

Async Usage

from litellm import arerank
import os, asyncio

os.environ["COHERE_API_KEY"] = "sk-.."

async def test_async_rerank(): 
    query = "What is the capital of the United States?"
    documents = [
        "Carson City is the capital city of the American state of Nevada.",
        "The Commonwealth of the Northern Mariana Islands is a group of islands in the Pacific Ocean. Its capital is Saipan.",
        "Washington, D.C. is the capital of the United States.",
        "Capital punishment has existed in the United States since before it was a country.",
    ]

    response = await arerank(
        model="cohere/rerank-english-v3.0",
        query=query,
        documents=documents,
        top_n=3,
    )
    print(response)

asyncio.run(test_async_rerank())

LiteLLM Proxy Usage

LiteLLM provides an cohere api compatible /rerank endpoint for Rerank calls.

Setup

Add this to your litellm proxy config.yaml

model_list:
  - model_name: Salesforce/Llama-Rank-V1
    litellm_params:
      model: together_ai/Salesforce/Llama-Rank-V1
      api_key: os.environ/TOGETHERAI_API_KEY
  - model_name: rerank-english-v3.0
    litellm_params:
      model: cohere/rerank-english-v3.0
      api_key: os.environ/COHERE_API_KEY

Start litellm

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

# RUNNING on http://0.0.0.0:4000

Test request

curl http://0.0.0.0:4000/rerank \
  -H "Authorization: Bearer sk-1234" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "rerank-english-v3.0",
    "query": "What is the capital of the United States?",
    "documents": [
        "Carson City is the capital city of the American state of Nevada.",
        "The Commonwealth of the Northern Mariana Islands is a group of islands in the Pacific Ocean. Its capital is Saipan.",
        "Washington, D.C. is the capital of the United States.",
        "Capital punishment has existed in the United States since before it was a country."
    ],
    "top_n": 3
  }'

Supported Providers

Provider	Link to Usage
Cohere	Usage
Together AI	Usage