> ## Documentation Index
> Fetch the complete documentation index at: https://portkey-docs-fix-sync-nav-diff.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> This documentation provides detailed information about the various ways you can access and interact with Prisma AIRS AI Gateway - **a robust AI gateway** designed to simplify and enhance your experience with Large Language Models (LLMs) like OpenAI's GPT models. 

Whether you're integrating directly with OpenAI, using a framework like Langchain or LlamaIndex, or building standalone applications, the AI Gateway offers a flexible, secure, and efficient way to manage and deploy AI-powered features.

## 2 Ways to Integrate

The AI Gateway can be accessed through two primary methods, each catering to different use cases and integration requirements:

### 1. OpenAI SDK through the AI Gateway

**Ideal for:** Python, Node.js, or any other application that already uses an OpenAI-compatible client. By changing the base URL and adding gateway-specific headers, you can integrate the AI Gateway's features into your existing setup. This is also how frameworks like Langchain and LlamaIndex connect to the gateway.

#### Installing the SDK

Choose the SDK that matches your development environment:

<Tabs>
  <Tab title="NodeJS">
    ```sh theme={null}
    npm install openai
    ```
  </Tab>

  <Tab title="Python">
    ```sh theme={null}
    pip install openai
    ```
  </Tab>
</Tabs>

#### Usage

Point the client at `https://aigw.portkey.ai/v1`, authenticate with your AI Gateway API key, and prefix the model name with your provider slug.

Learn more [here](/aigw/integrations/llms/openai).

### 2. REST API

**Ideal for:** applications that prefer RESTful services. The base URL for all REST API requests is `https://aigw.portkey.ai/v1`, with an [authentication](/aigw/api-reference/inference-api/authentication) header.

Learn more [here](/api-reference/inference-api/chat).