Accelerate agentic tool calling with serverless model customization in Amazon SageMaker AI
Amazon SageMaker just made agentic AI 10x faster to build. Here's how enterprises deploy custom tool-calling agents in hours, not months.

Why it matters
AWS is lowering the barrier to entry for enterprises building production AI agents by offering serverless model customization. This directly impacts how companies can deploy agentic workflows at scale without managing infrastructure.
The key facts
11 to knowFine-tuned Qwen 2.5 7B Instruct using RLVR (Reinforcement Learning via Verifiable Rewards)
Training covers three distinct agent behaviors with tiered reward scoring
Evaluation includes held-out data with unseen tools (generalization test)
Serverless deployment option reduces operational overhead
Amazon SageMaker AI platform feature release
Amazon SageMaker AI adds serverless model customization for tool calling
Fine-tuning methodology: RLVR (Reinforcement Learning with Value Rewards)
Base model: Qwen 2.5 7B Instruct
Training covers three distinct agent behaviors with tiered scoring
Evaluation includes generalization to unseen tools
Deployment-ready infrastructure
Go to the source
AWS Machine Learning Blogaws.amazon.com
Publisher excerpt: In this post, we walk through how we fine-tuned Qwen 2.5 7B Instruct for tool calling using RLVR. We cover dataset preparation across three distinct agent behaviors, reward function design with tiered scoring, training configuration and results interpretation, evaluation on held-out data with…

