not much happened today

**OpenAI** announced that **o3** and **o4-mini** models will be released soon, with **GPT-5** expected in a few months, delayed for quality improvements and capacity planning. **DeepSeek** introduced **Self-Principled Critique Tuning (SPCT)** to enhance inference-time scalability for generalist reward models. **Anthropic's Sonnet 3.7** remains a top coding model. **Google's Gemma 3** is available on KerasHub, and **Qwen 2.5 VL** powers a new Apache 2.0 licensed OCR model. **Gemini 2.5 Pro** entered public preview with increased rate limits and pricing announced, becoming a preferred model for many tasks except image generation. Meta's architectural advantage and the **FrontierMath benchmark** challenge AI's long-form reasoning and worldview development. Research reveals LLMs focus attention on the first token as an "attention sink," preserving representation diversity, demonstrated in **Gemma 7B** and **LLaMa 3.1** models. **MegaScale-Infer** offers efficient serving of large-scale Mixture-of-Experts models with up to **1.90x higher per-GPU throughput**.