Elon Musk, the world's richest man, has given awayjust 0.06% of his fortune to charity. Larry Page, Google's elusive co-founder and one of the wealthiest figures in Silicon Valley, has donated 0.03%.

In an age when billionaires routinely speak about 'saving humanity,' whether through Mars colonisation or artificial intelligence, the proportion feels almost aggressively small.

That figure comes from a newForbesanalysis of America's most generous philanthropists. Musk and Page, despite commanding a combined net worth that stretches beyond $1 trillion, are nowhere near the publication's top 25 list.

Not because they lack capacity. Because they have, byForbes'strict accounting, not actually parted with much of their money.

The methodology is unapologetically blunt. No credit for donor-advised funds sitting idle. No applause for pledges that have yet to materialise. Only real dollars disbursed to real charities count.

By that standard, the gulf between rhetoric and reality becomes uncomfortable.

In total, the nation’s top 25 philanthropists have donated $275 billion so far in their lifetimes, an uptick of $34 billion over last year.Not generous enough to make the top 25 cut: Elon Musk and Larry Page, the world’s two richest people, who together are worth more than $1…pic.twitter.com/IOBbAadVgL

Musk has cultivated a persona that oscillates between technological messiah and culture-war provocateur. He speaks of existential threats, population decline, civilisation itself. Yet when measured against his personal fortune, his philanthropic footprint barely registers.

Seventeen of the top 25 donors have given away more than 10% of their wealth. Only one of the 12 richest Americans, Warren Buffett, has crossed that threshold. Buffett remains the country's most generous donor, with $68.3 billion in lifetime giving.

Bill Gates and Melinda French Gates follow at $52.6 billion. MacKenzie Scott ranks third with $26.4 billion.

Source: International Business Times UK