‘Of course it’s a bubble’: AI start-up valuations soar in investor frenzy
Unprecedented funding leads 10 groups including OpenAI and Elon Musk’s xAI to gain almost $1tn in value in past year
Unprecedented funding leads 10 groups including OpenAI and Elon Musk’s xAI to gain almost $1tn in value in past year

Interest in AI and defence tech start-ups has boosted investor activity after a prolonged slowdown

Mega funding rounds create ‘fortress balance sheets’ as investors advise top groups to brace for tougher markets

The high priests of Silicon Valley and Wall Street are beginning to acknowledge the excesses of Big Tech valuations

Given that the growth of demand for AI is so unpredictable, there can be no doubt investor behaviour is speculative

Stocks tumble despite strong earnings reports from most Silicon Valley heavyweights

Infrastructure provider to OpenAI triples its valuation to $10bn in a year