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

# Introduction

> EURI is Euron's OpenAI-compatible AI API gateway. Access 40+ LLMs, embedding models, image generation, and audio APIs through a single endpoint.

## Base URL

```
https://api.euron.one/api/v1/euri
```

<Info>All endpoints follow the OpenAI API format. If you're already using the OpenAI SDK, just change the base URL and API key.</Info>

## What is EURI?

EURI provides a unified, OpenAI-compatible API to access models from **OpenAI, Google, Anthropic, Meta, Groq, Sarvam AI**, and more — all through a single API key and base URL.

<CardGroup cols={2}>
  <Card title="Chat Completions" icon="message" href="/api-reference/chat-completions">
    Generate text with 40+ LLMs including GPT-5, Claude Opus, Gemini Pro, Llama 4, and more.
  </Card>

  <Card title="Embeddings" icon="vector-square" href="/api-reference/embeddings">
    Create vector embeddings with OpenAI, Google, and Together models.
  </Card>

  <Card title="Image Generation" icon="image" href="/api-reference/image-generation">
    Generate images from text prompts using Gemini 3 Pro.
  </Card>

  <Card title="Audio" icon="microphone" href="/api-reference/text-to-speech">
    Text-to-speech and speech-to-text with Orpheus, Sarvam, and Whisper models.
  </Card>
</CardGroup>

## Why EURI?

* **One API, 40+ models** — Switch between providers by changing the `model` parameter.
* **OpenAI-compatible** — Drop-in replacement. Use the OpenAI SDK with EURI's base URL.
* **Pay-per-use** — No subscriptions for API usage. Top up your wallet and pay only for what you use.
* **Free tier** — 10,000 tokens/day on free models. Plus users get 100,000 tokens/day.

## Quick example

```bash theme={null}
curl -X POST https://api.euron.one/api/v1/euri/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_EURI_API_KEY" \
  -d '{
    "model": "gpt-4o-mini",
    "messages": [
      {"role": "system", "content": "You are a helpful assistant."},
      {"role": "user", "content": "What is EURI?"}
    ],
    "max_tokens": 200
  }'
```

## Next steps

<CardGroup cols={3}>
  <Card title="Get your API key" icon="key" href="/quickstart">
    Create an account and generate your first key.
  </Card>

  <Card title="Browse models" icon="list" href="/models">
    See all 40+ available models with pricing.
  </Card>

  <Card title="Authentication" icon="lock" href="/authentication">
    Learn how to authenticate your requests.
  </Card>
</CardGroup>