Anthropic Bedrock

The anthropic_bedrock provider accesses Anthropic models on Amazon Bedrock. You can find the model names in the Anthropic model documentation.

script({
  model:
    "anthropic_bedrock:anthropic.claude-3-sonnet-20240229-v1:0",
});

Configuration

GenAIScript supports multiple ways to configure AWS credentials for Bedrock access:

AWS_REGION - The AWS region where Bedrock is enabled (e.g., us-east-1, us-west-2)

Choose one of the following authentication methods:

export AWS_ACCESS_KEY_ID="AKIA..."
export AWS_SECRET_ACCESS_KEY="..."
export AWS_SESSION_TOKEN="..." # Optional, for temporary credentials

export AWS_PROFILE="my-profile"

export AWS_BEARER_TOKEN_BEDROCK="your-bedrock-api-key"

ANTHROPIC_SMALL_FAST_MODEL_AWS_REGION - Override AWS region for small/fast models
DISABLE_PROMPT_CACHING - Set to 1 to disable Anthropic prompt caching
ANTHROPIC_MODEL - Override the default Anthropic model ID for Bedrock

Enable Bedrock Access

Request access to Claude models in the Amazon Bedrock console under “Model Access”.
Configure Credentials

Set up your AWS credentials using one of the methods above. GenAIScript follows the standard AWS credential provider chain.
Set Region

Configure the AWS region where you have Bedrock access:
Terminal window
```
export AWS_REGION="us-east-1"
```
Test Configuration
Terminal window
```
genaiscript configure anthropic_bedrock
```

The following model aliases are attempted by default in GenAIScript.

Alias	Model identifier
reasoning	anthropic.claude-3-7-sonnet-20250219-v1:0:high
reasoning_small	anthropic.claude-3-7-sonnet-20250219-v1:0:low
large	anthropic.claude-3-7-sonnet-20250219-v1:0:0
small	anthropic.claude-3-5-haiku-20241022-v1:0
vision	anthropic.claude-3-7-sonnet-20250219-v1:0:0
vision_small	anthropic.claude-3-5-haiku-20241022-v1:0