This Week in AI: Claude Sonnet 4.5, Model Wars, and the Human Element
It's been an extraordinary week in AI development. Anthropic quietly released Claude Sonnet 4.5, and the early consensus is striking: it's outperforming GPT-5 and other recent releases for coding tasks. Just last week, everyone was talking about how impressive GPT Codex was. This week, those same voices are saying Sonnet 4.5 is better—and it's faster and cheaper too.