字节Dramagic上线：短剧AI全流程生产

本期资料来源（时间见图片）：
1. xAI发布Grok 4.7，低价但基准落后Claude与GPT-6
https://the-decoder.com/xai-launches-grok-4-7-at-bargain-prices-but-benchmarks-reveal-a-wide-gap-to-claude-and-gpt-6/
2. StepFun发布Step 5 Preview，1M上下文MoE模型
https://www.marktechpost.com/2026/09/20/stepfun-launches-step-5-preview/
3. Grok 4.6模型登陆Amazon Bedrock
https://aws.amazon.com/blogs/machine-learning/xais-grok-4-6-is-now-available-in-amazon-bedrock/
4. 字节跳动推出短剧全流程AI平台Dramagic
https://the-decoder.com/bytedance-launches-dramagic-a-full-pipeline-ai-platform-for-producing-short-dramas-from-script-to-screen/
5. OceanBase数据智能体方案登顶DAB基准
https://www.leiphone.com/category/industrynews/ug9HpmoWVwNMZZTH.html
6. AWS开源Agent Harness，称token成本降28%
https://www.marktechpost.com/2026/09/21/aws-strands-agents-team-releases-strands-harness/