A packed weekly AI roundup covering NVIDIA's Nemotron 3 Ultra (550B sparse MoE, hybrid Mamba-Transformer, open weights), Nemotron 3.5 ASR (600M multilingual streaming STT), Microsoft BUILD's seven new MAI models including MAI-Thinking-1 and MAI-Image-2.5, Ideogram 4.0 becoming the top open-weights text-to-image model, Reve 2.0 jumping to #2 on image Arena, and the launch of Agent Arena — a new agentic eval leaderboard built on 300K tasks and 2M tool calls. Also covered: NVIDIA RTX Spark PC chip, Google Gemma 4 12B, JetBrains Mellum2, Nous Research Hermes Desktop, Anthropic's recursive self-improvement report, and AI biosecurity policy developments.
Table of contents
Open Source LLMsNVIDIA’s RTX Spark and reinventing the PC - announcement at Computex 2026Microsoft BUILD, new PC, becoming a frontier lab with MAI-thinking-1, MAI-code and MAI-image 2.5 ( Blog )Image gen models race to the top of the ArenaBreaking news on the show: Agent Arena from LMArenaThis week’s Buzz - WeaveHacks 4 + Nemotron on CW Inference + WolfBench 3DAI in SocietyPheeeeew what a week.9 Impressions