## What’s So Good About ChatGPT Work? Here’s What I Found This article walks through how ChatGPT Work specifically earns its reputation, where the underlying models genuinely hold up against the competition, and where the honest limits are. Every major AI lab shipped a frontier model in roughly the same eight-week window this summer. Claude Sonnet 5 landed June 30, 2026. Grok 4.5 followed on July 8. GPT-5.6 went generally available July 9. Gemini 3.1 Pro has been iterating through the same stretch. When four capable labs are all releasing within days of each other, "which model is smartest"…