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

# FortAPI

> Enterprise AI Model API Gateway.

<CardGroup cols={2}>
  <Card title="Quick start" icon="bolt" href="/en/quickstart">
    First request in 3 minutes.
  </Card>

  <Card title="OpenAI compatible" icon="plug" href="/en/quickstart#step-2-first-request">
    Use the official OpenAI SDK. Just swap the `base_url`.
  </Card>

  <Card title="Dozens of models" icon="layer-group" href="https://www.fortapi.com">
    OpenAI, Anthropic Claude, Google Gemini, xAI Grok, DeepSeek and more.
  </Card>

  <Card title="Support" icon="envelope" href="mailto:support@fortapi.com">
    [support@fortapi.com](mailto:support@fortapi.com) — questions about anything.
  </Card>
</CardGroup>

<Note>
  **Base URL**: `https://www.fortapi.com/v1` (OpenAI protocol). With the Anthropic SDK, use the bare domain `https://www.fortapi.com` (no `/v1`). Auth via `Authorization: Bearer sk-...`.
</Note>

## What is FortAPI

**FortAPI** is a single API gateway to the world's leading AI models.
One API key, one OpenAI-compatible SDK, one FortAPI balance — and you get access to dozens of models from different providers without opening accounts at each of them.

## Who is it for

* **Teams** that need multiple models in one project — separate accounts at each vendor become a chore.
* **Researchers** who want to quickly compare Claude / GPT / Gemini answers on the same prompt.

## How it works

<Steps>
  <Step title="API key">
    In the **Tokens** section, generate an API key (starts with `sk-...`) and copy it.
  </Step>

  <Step title="First request">
    Set `base_url=https://www.fortapi.com/v1` in your OpenAI SDK and call any supported model.
  </Step>
</Steps>

## Help

Got questions? Email [support@fortapi.com](mailto:support@fortapi.com) — we typically reply within one business day.