GreenPan pioneered the ceramic nonstick category and markets its Thermolon coating as PFAS-free, PFOA-free, and free from lead and cadmium. That is accurate — GreenPan's sol-gel ceramic coating is one of the more transparently tested nonstick options available, and it is a meaningful step up from traditional PTFE pans. Stainless steel, however, has no coating at all, which means there is simply nothing to evaluate for safety concerns.
The practical comparison comes down to durability and convenience. GreenPan's ceramic coating degrades over time — the nonstick performance fades, and once it chips or scratches the aluminum base is exposed. Stainless steel lasts indefinitely with proper care. On the other hand, GreenPan makes cooking eggs and delicate fish substantially easier, especially for cooks still learning technique.
Both are rated 'better,' but for different use cases. Stainless steel is the better long-term investment — more durable, more versatile at high heat, and with zero coating concerns. GreenPan is the better gateway product for households transitioning away from Teflon who still want easy nonstick cooking. If coating-free is a priority, stainless wins; if nonstick ease is required, GreenPan is a safe choice.