MLflow AI Gateway
MLflow AI Gateway has been deprecated. Please use MLflow Deployments for LLMs instead.
The MLflow AI Gateway service is a powerful tool designed to streamline the usage and management of various large language model (LLM) providers, such as OpenAI and Anthropic, within an organization. It offers a high-level interface that simplifies the interaction with these services by providing a unified endpoint to handle specific LLM related requests.
Installation and Setupβ
Install mlflow
with MLflow AI Gateway dependencies:
pip install 'mlflow[gateway]'
Set the OpenAI API key as an environment variable:
export OPENAI_API_KEY=...
Create a configuration file:
routes:
- name: completions
route_type: llm/v1/completions
model:
provider: openai
name: text-davinci-003
config:
openai_api_key: $OPENAI_API_KEY
- name: embeddings
route_type: llm/v1/embeddings
model:
provider: openai
name: text-embedding-ada-002
config:
openai_api_key: $OPENAI_API_KEY
Start the Gateway server:
mlflow gateway start --config-path /path/to/config.yaml
Example provided by MLflow
β
The
mlflow.langchain
module provides an API for logging and loadingLangChain
models. This module exports multivariate LangChain models in the langchain flavor and univariate LangChain models in the pyfunc flavor.
See the API documentation and examples.
Completions Exampleβ
import mlflow
from langchain.chains import LLMChain, PromptTemplate
from langchain_community.llms import MlflowAIGateway
gateway = MlflowAIGateway(
gateway_uri="http://127.0.0.1:5000",
route="completions",
params={
"temperature": 0.0,
"top_p": 0.1,
},
)
llm_chain = LLMChain(
llm=gateway,
prompt=PromptTemplate(
input_variables=["adjective"],
template="Tell me a {adjective} joke",
),
)
result = llm_chain.run(adjective="funny")
print(result)
with mlflow.start_run():
model_info = mlflow.langchain.log_model(chain, "model")
model = mlflow.pyfunc.load_model(model_info.model_uri)
print(model.predict([{"adjective": "funny"}]))
API Reference:
Embeddings Exampleβ
from langchain_community.embeddings import MlflowAIGatewayEmbeddings
embeddings = MlflowAIGatewayEmbeddings(
gateway_uri="http://127.0.0.1:5000",
route="embeddings",
)
print(embeddings.embed_query("hello"))
print(embeddings.embed_documents(["hello"]))
API Reference:
Chat Exampleβ
from langchain_community.chat_models import ChatMLflowAIGateway
from langchain_core.messages import HumanMessage, SystemMessage
chat = ChatMLflowAIGateway(
gateway_uri="http://127.0.0.1:5000",
route="chat",
params={
"temperature": 0.1
}
)
messages = [
SystemMessage(
content="You are a helpful assistant that translates English to French."
),
HumanMessage(
content="Translate this sentence from English to French: I love programming."
),
]
print(chat(messages))
API Reference:
Databricks MLflow AI Gatewayβ
Databricks MLflow AI Gateway is in private preview. Please contact a Databricks representative to enroll in the preview.
from langchain.chains import LLMChain
from langchain_core.prompts import PromptTemplate
from langchain_community.llms import MlflowAIGateway
gateway = MlflowAIGateway(
gateway_uri="databricks",
route="completions",
)
llm_chain = LLMChain(
llm=gateway,
prompt=PromptTemplate(
input_variables=["adjective"],
template="Tell me a {adjective} joke",
),
)
result = llm_chain.run(adjective="funny")
print(result)