Ai Training

Meta's new terms may allow AI training on news sites from Oct. 30: Meta's new terms may let it crawl and scrape sites 'associated' with businesses that use its platforms, including news publishers, per Nieman Lab. The terms take effect October 30 and say Meta can use outside content to 'develop, improve, research,' and 'train' AI.

Tech Policy • The Verge AI

Xiaomi Just Showed Us What Million-Dollar RL Training Looks Like: A video analyzes Xiaomi's reported $3.47 million spend on only 30 reinforcement-learning training steps for frontier agentic RL. It walks through the training process and the scale involved.

Xiaomi • bycloud

Microsoft unveils MAI-Base-2 MoE with 2.8T total, 80B active parameters: Microsoft unveiled MAI-Base-2, a mixture-of-experts model with 2.8T total and 80B active parameters. It claims 4x-12x more pretraining FLOPs-efficiency than DeepSeek-V4-Pro-Base. Microsoft also cited MAI-Thinking-1, a general-purpose foundation model post-trained on MAI-Base-1 announced in June.

AI Models • Techmeme

StepFun releases open weights for Step 5 Preview, a 600B model with 27B active parameters: StepFun released open weights for its Step 5 Preview model, with 600B total and 27B active parameters and a 1M context window. It published a technical blog describing the model's 92-layer design, sparse grouped-query attention, and long-horizon agent training.

StepFun • Pandaily