At the time of my knowledge (September 2021), there has been no official release or announcement of GPT-4 by OpenAI, so it is currently impossible to know how much better GPT-4 would be compared to GPT-3...
At the time of my knowledge (September 2021), there has been no official release or announcement of GPT-4 by OpenAI, so it is currently impossible to know how much better GPT-4 would be compared to GPT-3...