NVIDIA and LangChain have released a new harness profile designed for the NVIDIA Nemotron 3 Ultra model within the LangChain Deep Agents framework. This profile aims to address the common trade-off between accuracy and cost in agentic systems by leveraging fine-tuning techniques.

The release provides a method to improve the performance of smaller or more efficient open models, which typically start with lower accuracy, when used as agents. By utilizing this specific harness profile, developers can teach these models to perform better for specific agent tasks without requiring extensive custom hardware or expertise in fine-tuning from scratch.

This approach offers a pathway to achieve higher accuracy in agentic workflows while managing the expenses associated with proprietary frontier models.