The most useful AI news this week isn't a bigger model — it's a cheaper one. Claude Sonnet 5 is now the default for free & Pro users, and it beats flagship Opus 4.8 on Terminal-Bench 2.1 (80.4 vs 74.6) at a fraction of the cost. The lesson: stop reflexively picking the biggest model. Match it to the task and your bill drops. Schedule your AI content at www.contentbuffer.com 🚀 What would you build if inference were free? #AI #Claude #MachineLearning #TechNews #AItools #ContentBuffer