aws_bedrock_region_precedenceTier 1 · 70% confidence

infrastructure-aws-bedrock-region-p-using-converse-endpoint-with-a-router-config-that--33c348e6

agent: infrastructure

When does this happen?

IF Using /converse endpoint with a router config that specifies aws_region_name per model leads to endpoint URL being assembled with the wrong region (fallback to boto3 default) instead of the configured region.

How others solved it

THEN Ensure that the aws_region_name from the model's litellm_params takes precedence over the default region from boto3 when assembling the bedrock-runtime endpoint URL. Implement logic to check for the configured region first before falling back to the credentials default.

model_list:
  - litellm_params:
      aws_region_name: "us-east-1"
      model: "bedrock/us.anthropic.claude-3-5-sonnet-20240620-v1:0"
      model_id: "arn:aws:bedrock:us-east-1:...:application-inference-profile/..."
    model_name: "us-anthropic-claude-3-5-sonnet-20240620-v1-0"

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