Did ChatGPT come up with Trump’s tariff rate formula?

Leading AI chatbots ChatGPT, Gemini, Claude and Grok all return the same formula for reciprocal tariff calculations, several X users claim.
Update (April 3, 10:50 am UTC): This article has been updated to correct the quote attributed to Wojtek Kopczuk
There’s a crazy theory on social media that US President Donald Trump’s newly announced reciprocal tariff plan — which hits all countries with a minimum 10% tariff — could have been designed by an artificial intelligence chatbot.
Only a short period after Trump announced the tariffs at the White House Rose Garden on April 2, some X users claim they were able to duplicate the same tariff plan with a rudimentary prompt using OpenAI’s ChatGPT.