Right now, DeepSeek is destroying on price and provides somewhat equivalent value compared to Sonnet. I still believe Sonnet is better, but I don't think it is 10 times better.
Something else that DeepSeek can do, which I am not saying they are/will, is they could train on questionable material like stolen source code and other things that would land you in deep shit in other countries. DeepSeek just needs to improve the value and I can see them destroying Anthropic since I believe coding is their main focus.
When it comes to text processing, I personally find GPT to be much better and that might also have to do with allegations that they trained on literature that they should not have.