AWS 为 SageMaker AI 无服务器模型定制推出训练会话正式版
AWS 宣布 SageMaker AI 无服务器模型定制的训练会话正式可用,用户可自行编写并协调训练循环,包括自定义损失函数和奖励信号,GPU 分配、分布式执行、故障恢复与检查点存储由 SageMaker AI 负责。该功能支持 SFT、DPO、RLVR、RLAIF 和多轮 RL,可选择 LoRA 或全量微调,目前支持 gpt-oss-20b、gemma-4-31B-it、Qwen3.6-27B 和 Qwen3.8-27B。计费按 SageMaker AI 处理的 token 计,奖励函数在用户环境打分时停止计费,且无需预留容量。

se case, and the agent handles data prep, technique choice, training, evaluation, and deployment. The agent works where you work, in SageMaker Studio, Kiro, Claude Code, Codex, or GitHub Copilot. “We adopted SageMaker AI Serverless Training Sessions to build a healthcare claim-denial triage model, and the experience validated the platform from day one. The low-level API surface, direct control over the forward and backward passes, sampling, and the optimizer step gave our scientists the fine-gra
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