Before You Ship Nova, Set Four Gates
A practical checklist for putting Amazon Nova into an application: choose nova-lite or nova-pro by workload, expose tools, and verify context, modality, region, and cost constraints.
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Amazon Nova
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Build adaptive AI interfaces with the AG-UI protocol, agent swarms, and Nova Act on AWS
Static interfaces cannot adapt when generative AI produces variable outputs, such as a medical scan showing one fracture versus twenty ambiguous regions requiring expert review. The solution combines three AWS technologies: the AG-UI protocol for standardized agent-to-UI streaming via Server-Sent Events, the Strands Agents SDK Swarm pattern for peer-to-peer agent collaboration, and Amazon Nova Act for browser-based legacy system integration. AG-UI removes custom WebSocket formats by defining typed events that both agent frameworks and frontends implement as a universal contract. Strands swarm agents debate hypotheses and iteratively refine findings, producing explainable results visible in real time, while Nova Act navigates login screens and fills forms on systems without APIs. A complete radiology assistant walkthrough demonstrates reduced interface development time and HIPAA-compliant data handling for medical imaging.
Amazon Nova Models: Now Available on Heroku
Amazon Nova’s nova-pro and nova-lite models are now available through Heroku Managed Inference and Agents, giving applications a managed way to use them. The integration initially supports text-to-text workloads, while multimodal support is planned for a future release; both models support tool use and offer 300,000-token context windows. Nova-lite targets speed, low latency, and high-volume real-time applications at $0.06 per 1M input tokens and $0.24 output, whereas nova-pro targets accuracy and deep reasoning at $0.80 input and $3.20 output. Heroku provides an OpenAI-compatible /v1/chat/completions endpoint for chat and generation, plus /v1/agents/heroku for built-in Heroku tools and custom MCP tools, with provisioning available in US and EU regions through the add-on or CLI.
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