Amazon SageMaker AI Unleashes Training Session APIs for Custom Model Tuning

Amazon SageMaker AI just dropped training session APIs that let you write your own training loops without wrestling with GPU infrastructure—think SFT, DPO, or whatever custom RL magic you're cooking up. The APIs handle all the heavy lifting (GPU allocation, distributed execution, checkpointing), while you focus on your algorithm, and you only pay for tokens processed, not GPU time. Available now in US East (N. Virginia), US West (Oregon), and Asia Pacific (Mumbai).