Claude Opus 4.5 vs GPT 5.2: Which AI Model Leads in 2026?
TL;DR: Claude Opus 4.5 and GPT 5.2 represent the cutting edge of AI capabilities in early 2026, each excelling in distinct areas. Claude Opus 4.5 dominates software engineering with 80.9% on SWE-bench Verified and superior long-horizon coding tasks, while GPT 5.2 excels at professional