Elon Musk makes a major decision about his businesses as he marked his 55th birthday.
The tech giant and the richest man in the world turned 55 on Sunday, June 28, and on his big day he announced that Grok 4.5 will be entering into internal beta testing.
Grok 4.5 and Space X, Tesla:
According to Investing, Musk announced on Sunday that Grok 4.5 has entered private beta testing at SpaceX and Tesla.
The model is built on a 1.5 trillion parameter V9 foundation model with Cursor data incorporated during supplemental training.
Initial evaluations indicate the model’s performance approaches or potentially surpasses Opus, as per Musk.
He stated that reinforcement learning continues to improve the model substantially, while the Grok Build harness advances daily.
Additionally, Musk revealed that SpaceX and related teams will release a newly trained model from scratch each month this year, maintaining a rapid iteration pace.
Musk, world first trillionaire:
According to The Mirror US, Musk, the CEO of SpaceX and Tesla, became the world's first trillionaire, only shortly, though, as he lost his trillionaire status on Wednesday, June 24, after SpaceX shares came "down to earth with a bump."
Musk's wealth-making has accelerated at a never-before-seen rate.
On 12 June last year, his net worth was 370 billion dollars, and then fast forward a year, he became the world's first trillionaire on 12 June 2026, as the tech mogul's rocket company began trading on the stock market, opening at $150.
He claimed the title of the world's richest person in January 2021, clinching the title from the Amazon founder Jeff Bezos, after Tesla’s shares surged to take his net worth past $185 billion.
Since then, there have been no brakes in his accelerating wealth. Wednesday's drop of his net worth from $1.08 trillion the day before to $957 billion was the largest drop in decades.
Wealth inequality in the US:
National Bureau of Economic Research data revealed, over the last three decades, as America's richest individuals have added to their net worth, the bottom have dipped into "negative wealth."
An analysis of the Federal Reserve data shows that the bottom 50% of households in the US account for only 2.5% of the wealth in the US, a figure that hasn't changed in decades.
As per data, the richest 1 percent went up from owning 40 percent of US stock and mutual funds in 2002 to owning half of it in 2026.
Musk's net worth alone is equivalent to more than 3 percent of US gross domestic product.
As the wealth of the America's richest .01 percent increases, so does their share of total US taxes.
According to IPS analysis of Saez and Zucman data, even though the share of the ultra-wealthy in the nation's wealth nearly quadrupled from 1953-2018, the tax share of the group remained close to the same as it was in 1953.
Fed data found that the richest 10 percent of American households now own over two-thirds of the nation’s total wealth.
The top 1 percent holds 31 percent of total wealth, just falling slightly short than the entire bottom 90 percent of US households.
Musk as the exclamation point of the concentration of wealth in the US, Musk alone now owns nearly a third of what 165 million people (nearly half of the US population) own.
