AWS Bedrock

Run models through AWS Bedrock. Both claude-bedrock and gemini-bedrock use @langchain/aws and support either explicit credentials or the AWS default credential chain.

Authentication

Bedrock supports two authentication methods:

Explicit CredentialsDefault Credential Chain

.env

AWS_ACCESS_KEY_ID=AKIAIOSFODNN7EXAMPLE
AWS_SECRET_ACCESS_KEY=wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY
AWS_REGION=us-east-1

If no explicit credentials are set, the AWS SDK uses the default credential chain:

1. Environment variables
2. Shared credentials file (~/.aws/credentials)
3. SSO credentials
4. EC2/ECS instance role
5. And more...

# Only region needed if using default chain
export AWS_REGION=us-east-1

Environment Variables

Env Var	Required	Default	Description
AWS_REGION	No	us-east-1	AWS region
AWS_ACCESS_KEY_ID	No*	--	IAM access key
AWS_SECRET_ACCESS_KEY	No*	--	IAM secret key

* Credential requirement

AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY are not required if you are using the AWS default credential chain (e.g., IAM role, SSO, ~/.aws/credentials).

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claude-bedrock

Claude models on AWS Bedrock.

Model Naming

Bedrock uses full model IDs

Bedrock model IDs differ from the Anthropic API. Use the full ARN-style identifier.

Anthropic API	Bedrock Model ID
claude-opus-4-6	anthropic.claude-opus-4-6-v1
claude-sonnet-4-20250514	anthropic.claude-sonnet-4-20250514-v1

Setup

Environment FileDefault Credential Chain

.env

LLM_PROVIDER=claude-bedrock
AWS_REGION=us-east-1
AWS_ACCESS_KEY_ID=AKIAIOSFODNN7EXAMPLE
AWS_SECRET_ACCESS_KEY=wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY

.env

LLM_PROVIDER=claude-bedrock
AWS_REGION=us-east-1

Usage

pnpm run generate -- --provider claude-bedrock

# Override model
pnpm run generate -- --provider claude-bedrock --model anthropic.claude-sonnet-4-20250514-v1

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gemini-bedrock

Gemini models on AWS Bedrock, also via @langchain/aws (ChatBedrockConverse).

Setup

Environment FileDefault Credential Chain

.env

LLM_PROVIDER=gemini-bedrock
AWS_REGION=us-east-1
AWS_ACCESS_KEY_ID=AKIAIOSFODNN7EXAMPLE
AWS_SECRET_ACCESS_KEY=wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY

.env

LLM_PROVIDER=gemini-bedrock
AWS_REGION=us-east-1

Usage

pnpm run generate -- --provider gemini-bedrock

# Override model
pnpm run generate -- --provider gemini-bedrock --model gemini-2.5-pro

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Prerequisites

Enable models in the Bedrock console

Before using any model on Bedrock, you must enable access in the AWS Bedrock console:

1. Open the AWS Bedrock console
2. Navigate to Model access
3. Request access to the desired model(s)
4. Wait for approval (Claude models may require a brief approval period)

Region availability

Not all models are available in all AWS regions. us-east-1 and us-west-2 have the broadest model support.