JD Vance stormed out of a dinner with heads of state on Monday night when the Chinese vice-premier “started singing the praises of trade and the UN”, according to a reporter in the room.

Dominique Seux, the only French journalist present at the dinner at Paris’s Elysée palace on Monday night, said the US vice-president, clearly saw the speech – delivered by Zhang Guoqing – as “pure anti-Trumpist”.

Mr Vance wasn’t the only big name to cut short his dinner, held to mark a major two-day AI Action summit in Paris’ Grand Palais.

Sam Altman, the OpenAI boss, also left early when he received Elon Musk’s offer to buy his company during the dinner.

Mr Altman rejected the offer from Mr Musk to buy OpenAI for $97.4 billion.

“No thank you, but we will buy Twitter for $9.74 billion if you want,” Mr Altman responded on X.

Mr Musk, who bought X under its former moniker for $44 billion in 2022, replied to the post by simply writing: “Swindler.”