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# Helicone

This page covers how to use the Helicone ecosystem within LangChain.

## What is Helicone?

Helicone is an open source observability platform that proxies your OpenAI traffic and provides you key insights into your spend, latency and usage.

## Quick start

With your LangChain environment you can just add the following parameter.

    export OPENAI_API_BASE="https://oai.hconeai.com/v1"

Now head over to helicone.ai to create your account, and add your OpenAI API key within our dashboard to view your logs.

## How to enable Helicone caching

    from langchain.llms import OpenAI
    import openai
    openai.api_base = "https://oai.hconeai.com/v1"

    llm = OpenAI(temperature=0.9, headers={"Helicone-Cache-Enabled": "true"})
    text = "What is a helicone?"
    print(llm(text))

Helicone caching docs

## How to use Helicone custom properties

    from langchain.llms import OpenAI
    import openai
    openai.api_base = "https://oai.hconeai.com/v1"

    llm = OpenAI(temperature=0.9, headers={
            "Helicone-Property-Session": "24",
            "Helicone-Property-Conversation": "support_issue_2",
            "Helicone-Property-App": "mobile",
          })
    text = "What is a helicone?"
    print(llm(text))

Helicone property docs