The Trump administration has restricted foreign access to Anthropic's latest AI models over security fears, forcing a global shutdown. Could the row hurt the Claude-maker's IPO plans and set a far-reaching precedent?

The sky-high valuations of Anthropic and OpenAI hinge on the global adoption of their increasingly powerful models.

By imposing export controls on the tech firm’s leading AI models, the Trump administration has sent a signal to the rest of the world not to rely on American AI.