Alex Gibney’s marathon documentary delivers numerous eye-raising insights into the broligarch’s business deals, early idealism and apocalyptic appetite for fathering children

Veteran documentarian Alex Gibney’s film about the richest broligarch on the planet has been one of the most eagerly anticipated films at the Venice film festival this year. The Oscar-winning 72-year-old, who has in previous films taken on the US military, the Catholic church, Vladimir Putin and Scientology, has been investigating the tech tycoon’s ascent and speaking to people in his orbit since late 2022, before his Maga turn and Trump 2.0.

The result clocks in at just under four hours and presents a comprehensive answer to how on earth one man managed to amass so much money and political influence. It is shocking less for any individual new pieces of information Gibney has unearthed than for its totality. Here are six things the film tells us:

Venice film festival: Alex Gibney interviews former colleagues, wives, the trillionaire’s father and a CG avatar in this absorbing documentary

‘Elon is a nuke.” The speaker is Ashley St Clair, a former conservative Maga influencer and one of Elon Musk’s former girlfriends-slash-baby mommas.

She is a fascinating expert witness in Alex Gibney’s four-hour epic study of the world’s richest and dullest man: the overgrown brattish South-African-born trillionaire plutocrat, ersatz visionary and Trump courtier who owns Tesla cars, SpaceX rocket ships, Starlink satellites on which nation states’ military capabilities are increasingly reliant, X (formerly Twitter) which shapes the collective incel id of billions and GrokAI whose vast server farms daily guzzle oceans of precious water.