> For the complete documentation index, see [llms.txt](https://docs.greennode.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.greennode.ai/ai-stack/ai-gateway.md).

# AI Gateway

**AI Gateway** is a centralized gateway that lets you integrate AI models from multiple providers (OpenAI, Google, Deepseek, and more) through a single endpoint — reducing the complexity of switching models, centralizing monitoring, optimizing cost, and protecting your data.

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## Overview

| Capability            | Description                                                                                       |
| --------------------- | ------------------------------------------------------------------------------------------------- |
| **Multi-LLM support** | Flexibly integrate multiple LLMs from multiple providers through one gateway                      |
| **Monitoring**        | Track performance and activity through metrics and logs, including detailed latency breakdowns    |
| **Access control**    | Manage **Authentication Tokens** and set rate limits by request count or token count              |
| **Cost optimization** | Caching reduces the number of requests sent to the model, saving cost and improving response time |

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## Getting Started

| I want to...                                                      | Go to                                                                                            |
| ----------------------------------------------------------------- | ------------------------------------------------------------------------------------------------ |
| Understand what AI Gateway is and what it solves                  | [What is AI Gateway?](/ai-stack/ai-gateway/what-is-ai-gateway.md)                                |
| Initialize a gateway, send my first request, and monitor activity | [Get Started with AI Gateway](/ai-stack/ai-gateway/get-starting-with-ai-gateway.md)              |
| Add, edit, or remove providers and models on the gateway          | [Working with Providers and Models](/ai-stack/ai-gateway/working-with-providers-and-models.md)   |
| Create and manage Authentication Tokens                           | [Working with Authentication Tokens](/ai-stack/ai-gateway/working-with-authentication-tokens.md) |
| Reduce cost and latency with caching                              | [Caching](/ai-stack/ai-gateway/caching.md)                                                       |
| Limit requests or tokens within a time window                     | [Rate Limit](/ai-stack/ai-gateway/rate-limit.md)                                                 |
| Learn how AI Gateway protects sensitive information               | [Security](/ai-stack/ai-gateway/security.md)                                                     |
| See the pricing policy for the service                            | [Pricing](/ai-stack/ai-gateway/pricing.md)                                                       |