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

# 3rd party integrations

<Tabs>
  <Tab title="LangChain">
    Integrating with Langchain is super easy! Just change the base\_url

    ```ini theme={null}
    export OPENAI_API_BASE="https://oai.helicone.ai/v1"
    python3 you_lang_chain_program.py
    ```
  </Tab>

  <Tab title="gpt_index">
    Since GPT Index uses lang chain under the hood, you can use the same technique
    to integrate as well

    ```ini theme={null}
    export OPENAI_API_BASE="https://oai.helicone.ai/v1"
    python3 you_lang_chain_program.py
    ```
  </Tab>

  <Tab title="Fabius">
    [Fabius](https://github.com/fabiustech/openai) now supports Helicone

    ```go theme={null}
    package main

    import "github.com/fabiustech/openai"

    func main() {
    	var client = openai.NewClient("your token")
    	client.SetBaseURL("https://oai.helicone.ai/v1")

    	// Your code goes here!
    }
    ```
  </Tab>
</Tabs>