> The other thing was that o1 had access to many more answer / search strategies. For example, if you asked o1 to summarize a long email, it would just summarize the email. QwQ reasoned about why I asked it to summarize the email. Or, on hard math questions, o1 could employ more search strategies than QwQ. I'm curious how DeepSeek-R1 will fare in that regard.

This is probably the result of a classifier which determines if it have to go through the whole CoT at the start. Mostly on tough problems it does, and otherwise, it just answers as is. Many papers (scaling ttc, and the mcts one) have talked about this as a necessary strategy to improve outputs against all kinds of inputs.