There’s a possibility that someone used an LLM to formulate the tariff percentages. That’s not baseless, there’s evidence based on replication and similar language in the USTR site.
Which makes it a funny joke to suggest that they did the entire tariff plan top to bottom in ChatGPT.
https://www.theverge.com/news/642620/trump-tariffs-formula-ai-chatgpt-gemini-claude-grok