New serverless model customization capability in Amazon SageMaker AI

Published
December 3, 2025
https://aws.amazon.com/about-aws/whats-new/2025/12/new-serverless-model-customization-capability-amazon-sagemaker-ai

New Serverless Model Customization Capability in Amazon SageMaker AI

AWS introduces a new serverless model customization capability in Amazon SageMaker AI, enabling AI developers to quickly customize popular models with supervised fine-tuning and advanced techniques like reinforcement learning. This fully managed service simplifies the end-to-end model customization workflow, from data preparation to evaluation and deployment, accelerating the process with an easy-to-use interface.

Developers can customize models such as Amazon Nova, Llama, Qwen, DeepSeek, and GPT-OSS with their own data. They can use supervised fine-tuning and the latest customization techniques, including reinforcement learning and direct preference optimization. Additionally, the AI agent-guided workflow (in preview) allows for generating synthetic data, analyzing data quality, and handling model training and evaluation—all serverless.

Available in the following AWS Regions: Europe (Ireland), US East (N. Virginia), Asia Pacific (Tokyo), and US West (Oregon). To join the waitlist for the AI agent-guided workflow, visit the sign-up page.

What to do

Source: AWS release notes




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