---
title: Amazon Bedrock
description: Use Amazon Bedrock models with Nexus — AWS SigV4 auth and Converse API.
---

The Amazon Bedrock provider connects to the AWS Bedrock Converse API. It uses AWS SigV4 request signing instead of API keys, and the Converse API format instead of OpenAI's.

## Installation

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

## Quick Start

```go
provider := bedrock.New(
    os.Getenv("AWS_ACCESS_KEY_ID"),
    os.Getenv("AWS_SECRET_ACCESS_KEY"),
    "us-east-1",
)

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

## Options

| Option | Description |
|--------|-------------|
| `bedrock.WithBaseURL(url)` | Override the API base URL (default: constructed from region) |
| `bedrock.WithSessionToken(token)` | AWS session token for temporary credentials |

## Capabilities

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

## Authentication

Bedrock uses AWS credentials instead of API keys:

```go
// Standard credentials
provider := bedrock.New(accessKeyID, secretAccessKey, region)

// With temporary session token (STS)
provider := bedrock.New(accessKeyID, secretAccessKey, region,
    bedrock.WithSessionToken(sessionToken),
)
```

## Models

| Model | Context | Max Output | Input Price | Output Price |
|-------|---------|-----------|-------------|-------------|
| `anthropic.claude-3-5-sonnet-20241022-v2:0` | 200K | 8,192 | $3.00/M | $15.00/M |
| `meta.llama3-1-70b-instruct-v1:0` | 131K | 4,096 | $2.65/M | $3.50/M |
| `amazon.titan-text-express-v1` | 8,192 | 4,096 | $0.20/M | $0.60/M |