AWS Step Functions enables code-free LLM routing on Amazon Bedrock

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A new hands-on guide demonstrates how to build content-based AI model routing on AWS without writing any application code. The approach uses an AWS Step Functions state machine that first classifies each incoming question using Amazon Nova Micro, then directs it to the most appropriate model based on the category. Code-related queries are routed to Claude Haiku, creative writing prompts to Amazon Nova Lite, and all other questions handled by Nova Micro as the default. The entire routing logic is defined in a single JSON document, leveraging Step Functions' native integration with Amazon Bedrock to call models directly without Lambda functions. Built-in retry handling and a visual workflow console provide operational visibility, making the setup suitable for teams looking to reduce AI inference costs by matching query complexity to model capability.

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