What are the biggest AI companies and how much are they worth?

A renewed debate has emerged over who should control the development of artificial intelligence (AI), following an essay by Anthropic CEO Dario Amodei calling for greater regulation. US President Donald Trump responded by stating that the US already has significant regulatory power over AI companies, framing safety concerns as a conspiracy benefiting China. Al Jazeera unpacks the companies driving the AI race and the billions of dollars behind them.