Last Week in AI Models & Releases · Jul 21, 2026 11:31 imp:50 Last Week in AI #251 - Mythos Back, Sonnet 5, Etched, LongCat Trump lifts restrictions on Anthropic, Anthropic launches Claude Sonnet 5, Google's NotebookLM updates, chips stories from Etched and Baidu, and more! Leer el original en Last Week in AI →