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The Javelin AI Gateway service is a high-performance, enterprise grade API Gateway for AI applications. It is designed to streamline the usage and access of various large language model (LLM) providers, such as OpenAI, Cohere, Anthropic and custom large language models within an organization by incorporating robust access security for all interactions with LLMs. Javelin offers a high-level interface that simplifies the interaction with LLMs by providing a unified endpoint to handle specific LLM related requests. See the Javelin AI Gateway documentation for more details. Javelin Python SDK is an easy to use client library meant to be embedded into AI Applications

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Installation and setup

Install javelin_sdk to interact with Javelin AI Gateway: 
pip install 'javelin_sdk'
Set the Javelin’s API key as an environment variable: 
export JAVELIN_API_KEY=...

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Completions example

from langchain_classic.chains import LLMChain
from langchain_community.llms import JavelinAIGateway
from langchain_core.prompts import PromptTemplate

route_completions = "eng_dept03"

gateway = JavelinAIGateway(
    gateway_uri="http://localhost:8000",
    route=route_completions,
    model_name="text-davinci-003",
)

llmchain = LLMChain(llm=gateway, prompt=prompt)
result = llmchain.run("podcast player")

print(result)

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Embeddings example

from langchain_community.embeddings import JavelinAIGatewayEmbeddings
from langchain_openai import OpenAIEmbeddings

embeddings = JavelinAIGatewayEmbeddings(
    gateway_uri="http://localhost:8000",
    route="embeddings",
)

print(embeddings.embed_query("hello"))
print(embeddings.embed_documents(["hello"]))

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Chat example

from langchain_community.chat_models import ChatJavelinAIGateway
from langchain.messages import HumanMessage, SystemMessage

messages = [
    SystemMessage(
        content="You are a helpful assistant that translates English to French."
    ),
    HumanMessage(
        content="Artificial Intelligence has the power to transform humanity and make the world a better place"
    ),
]

chat = ChatJavelinAIGateway(
    gateway_uri="http://localhost:8000",
    route="mychatbot_route",
    model_name="gpt-3.5-turbo"
    params={
        "temperature": 0.1
    }
)

print(chat(messages))
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