I don't know where the author gets his information. The GPT-5 is not on par with Claude Opus.
It's still cheaper than Sonnet, but certainly not by 10x. Sonnet, arguably, is still better than GPT-5, although not by much and not in all circumstances.
I read analysis that GPT-5 is better at debugging (super important) and following exact instructions (many people don't quite know what they are asking for anyway, so this could be counter-productive in many cases).
So no, OpenAI did not burn the boats...
(Ok, this is for coding only. I have no information on other uses.)
It's still cheaper than Sonnet, but certainly not by 10x. Sonnet, arguably, is still better than GPT-5, although not by much and not in all circumstances.
I read analysis that GPT-5 is better at debugging (super important) and following exact instructions (many people don't quite know what they are asking for anyway, so this could be counter-productive in many cases).
So no, OpenAI did not burn the boats...
(Ok, this is for coding only. I have no information on other uses.)