Start with the declared positioning for DeepSeek R1 and GPT-5.6 Sol. It describes the work each live route is intended to support, so the useful distinction is the match between that positioning and your task.
Capabilities describe supported input or work categories, while the primary capability identifies the route's main job. A longer capability list is not a rank; it simply records a different declared scope.
Both entries show one eligible guest text run before sign-in and a per-run Credit estimate for continued use. Open either model page to see its current workspace and make your own task-specific assessment.