---
title: DeepSeek
description: Use DeepSeek reasoning models (R1) and chat models with Nexus.
---

DeepSeek offers reasoning-capable models including DeepSeek-R1 with extended thinking support. Uses an OpenAI-compatible API.

## Installation

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

## Quick Start

```go
provider := deepseek.New(os.Getenv("DEEPSEEK_API_KEY"))

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

## Options

| Option | Description |
|--------|-------------|
| `deepseek.WithBaseURL(url)` | Override the API base URL (default: `https://api.deepseek.com`) |

## Capabilities

| Capability | Supported |
|-----------|-----------|
| Chat | Yes |
| Streaming | Yes |
| Embeddings | No |
| Vision | No |
| Tools | Yes |
| Thinking | Yes (R1 model) |

## Models

| Model | Context | Max Output | Input Price | Output Price |
|-------|---------|-----------|-------------|-------------|
| `deepseek-chat` | 65,536 | 8,192 | $0.27/M | $1.10/M |
| `deepseek-reasoner` | 65,536 | 8,192 | $0.55/M | $2.19/M |