not much happened today

**NVIDIA** released **Nemotron 3 Ultra**, a fully open **550B MoE** model with **55B active parameters** and **1M context**, optimized for long-running agent tasks with up to **5x speedup** and **30% cost reduction**. It features hybrid Mamba/attention, LatentMoE, native MTP, and was pretrained on **20T tokens** using NVFP4 low-precision format. Benchmarks show strong performance with **47.7 Intelligence Index** and **400+ output tokens/sec**. The model is supported across major serving platforms. Additionally, **Nemotron 3.5 ASR** is an open streaming ASR model with **0.6B parameters**, supporting **40 language-locale combinations** and sub-100ms latency, designed for voice agents. **Anthropic** highlighted early signs of recursive self-improvement (RSI) in AI, with **Claude** models authoring **80%+ of merged code** and engineers shipping **8x more code**. Claude Opus 4 achieved **3x speedup** on training scripts, while Mythos Preview reached **~52x speedup** and provided better research suggestions than humans **64% of the time**.