Last Week in AI #251 - Mythos Back, Sonnet 5, Etched, LongCat

# What You Need to Know This Week in AI Anthropic, a major AI company, can now operate without previous government restrictions, while also releasing a faster, more capable version of its Claude AI assistant called Sonnet 5. Google upgraded its AI note-taking tool, and companies like Etched and Baidu announced new AI chips designed to make artificial intelligence work more efficiently. These developments show AI companies are moving quickly to improve their products and remove barriers to their growth.