If you compare DeepSeek and ChatGPT, I will answer honestly - of these two options is better..... Claude 
To compare all three (Deepseek, Claude and ChatGPT) I put forward same question to free version of these AI chat bots. The question is, whats the result of Arsenal last game?
DeepSeek gave a simple 2 liner answer that better go and check online to get real time information.
Claude said since cut off date for my knowledge is from October 2024, I can't answer this. But he gave some recommendation where I should go and check about Arsenal last game result.
ChatGPT was one who gave correct answer to this along with web links for more information
I will do more such test to figure out which is better in performance because one question is not enough to decide which AI chat bot is best.
I know what you mean! But here's the thing.
I will start “from afar” - have you ever noticed that when you ask a question, for example ChatGPT or Grok, in the answer window runs quickly something like “Page search”. And it's not just for fun
In fact
ChatGPT/Grokand some other systems can work in 2 modes:
Give answers based on a KNOWLEDGE base and a large language model
Give answers by processing through a search engine, a few selections of relevant sites, finding the necessary data, which allows you to work with “the most relevant data”. For tasks like “what is the score”, when you don't need to think and just take information from open sources - the second mechanism works. I am not ready to say whether these data are used as raw data for training. But it's not “AI”, it's just data mining, like Google and other search engines.
But I use it 99.9% for decisions where knowledge, logic, and the ability to “think” are needed. Agree - there is a difference between thinking about solving a complex problem (e.g. writing code) and searching for information in open sources !
Try to load them with some specific, narrow-profile tasks, the solution of which must be thought out ! And there the quality of answers will be different.