---
title: OpenRouter
description: Access hundreds of models through OpenRouter's unified API with Nexus.
---

OpenRouter is a meta-router that gives access to many models from different providers via a single API. Supports extra headers for site attribution.

## Installation

```go
import "github.com/xraph/nexus/providers/openrouter"
```

## Quick Start

```go
provider := openrouter.New(os.Getenv("OPENROUTER_API_KEY"))

gw := nexus.New(
    nexus.WithProvider(provider),
)
```

## Options

| Option | Description |
|--------|-------------|
| `openrouter.WithBaseURL(url)` | Override the API base URL (default: `https://openrouter.ai/api/v1`) |
| `openrouter.WithSiteURL(url)` | Set the `HTTP-Referer` header for rankings |
| `openrouter.WithSiteName(name)` | Set the `X-Title` header for rankings |

## Capabilities

| Capability | Supported |
|-----------|-----------|
| Chat | Yes |
| Streaming | Yes |
| Embeddings | Yes |
| Vision | Yes |
| Tools | Yes |
| Thinking | No |

## Models

| Model | Context | Max Output | Input Price | Output Price |
|-------|---------|-----------|-------------|-------------|
| `openai/gpt-4o` | 128K | 16,384 | $2.50/M | $10.00/M |
| `anthropic/claude-3.5-sonnet` | 200K | 8,192 | $3.00/M | $15.00/M |
| `meta-llama/llama-3.1-405b-instruct` | 131K | 4,096 | $2.70/M | $2.70/M |
| `google/gemini-2.0-flash-001` | 1M | 8,192 | $0.10/M | $0.40/M |