Claude Opus 4.6’s recent arrival is making waves across the internet, and while it shared the spotlight with OpenAI’s GPT-5.3-Codex, the real story is how it builds on Opus 4.5 (try it here). Why does that matter? Opus 4.5 already crossed the 80.9% SWE-bench barrier, which was considered near-superhuman coding performance at launch. That context […]