The Proprietary Amazon LLM (Large Language Model) family of models, the Nova family, which was launched at re:Invent last year. Two new models are unveiled in this year’s re:Invent, they are better performing models with advanced reasoning capabilities and better tooling integration for Agentic workloads. These models are:
- Nova 2 Lite
- Nova Act
Amazon Nova 2 Lite is a next-generation reasoning model, which is a fast, cost-effective reasoning model for most workloads. It has a feature to enable/disable extended thinking with the options of low, medium, and high budget options. It has multi-step reasoning, which means it can break down tasks into small chunks or sub-tasks to execute them appropriately. This is also embedded with its tools calling feature that makes it possible to predict the appropriate tool to call for a specific subtask. This means the model can orchestrate dozens of tools from a single prompt, which accommodates the increasing number of tools that will be used in the Agentic framework.
Lastly, it is a 1-million context window model, which makes it very beneficial for multi-turn agentic experiences, because it helps avoid performance losses associated with context compression techniques that can be a bottleneck to a model’s overall output.
Amazon Nova Act is an SDK designed for developers to build and deploy web agents. It is used for creating an autonomous UI-based agent. The agents are designed to read patterns and understand patterns, and use them to take action on a user’s behalf. An example is understanding an email UI and using it to navigate the Amazon Workmail web UI to compose and send a message.
The model functions by taking screenshots of a user interface and reading the contents of the screenshots like a human would, and deciding the action to take. This approach can handle dynamic UI changes better than hard-coded checks, which need continuous modifications for every unique UI screenshot.
At Launch, Nova Act will have the following features:
- Browser- user model
- Nova Act Playground
- SDK
- IDE Extension
- CLI to deploy to AWS
- Tool Use
Nova Act delivers frontier-class browser agents and achieves 90% reliability for enterprise UI workflows. It also offers the fastest and easiest path to a production browser agent and is more cost-effective among leading browser agents. Nova Act also has a web-based playground at https://nova.amazon.com/act that can be used for prototyping agent workflows without the need to install and configure the SDK.
