> ## Documentation Index
> Fetch the complete documentation index at: https://docs.langchain.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Helicone integrations

> Integrate with Helicone using LangChain Python.

This page covers how to use the [Helicone](https://helicone.ai) ecosystem within LangChain.

## What is helicone?

Helicone is an [open-source](https://github.com/Helicone/helicone) 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.

```bash theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
export OPENAI_API_BASE="https://oai.hconeai.com/v1"
```

Now head over to [helicone.ai](https://www.helicone.ai/signup) to create your account, and add your OpenAI API key within our dashboard to view your logs.

## How to enable helicone caching

```python theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
from langchain_openai 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.invoke(text))
```

[Helicone caching docs](https://docs.helicone.ai/advanced-usage/caching)

## How to use helicone custom properties

```python theme={"theme":{"light":"catppuccin-latte","dark":"catppuccin-mocha"}}
from langchain_openai 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.invoke(text))
```

[Helicone property docs](https://docs.helicone.ai/advanced-usage/custom-properties)

***

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