The leaderboard leader [1] is still showing the traditional AI leader, Google, winning. With Gemini-2.0-Flash-Thinking-Exp-01-21 in the lead. No one seems to know how many parameters that has, but random guesses on the internet seem to be low to mid 10s of billions, so fewer than DeepSeek-R1. Even if those general guesses are wrong, they probably aren't that wrong and at worst it's the same class of model as DeepSeek-R1.
So yes, DeepSeek-R1 appears to be not even be best in class, merely best open source. The only sense in which it is "leading the market" appears to be the sense in which "free stuff leads over proprietary stuff". Which is true and all, but not a groundbreaking technical achievement.
The DeepSeek-R1 distilled models on the other hand might actually be leading at something... but again hard to say it's groundbreaking when it's combining what we know we can do (small models like llama) with what we know we can do (thinking models).