Artificial intelligence start-up Perplexity AI has made a surprise $34.5bn (£25.6bn) takeover bid for the world's most popular web browser, Google Chrome. The three-year-old firm, whose backers include Amazon founder Jeff Bezos and chip maker Nvidia, is headed by a former Google and OpenAI employee.

Perplexity made headlines this week when the artificial intelligence startup said it had offered to buy Google’s Chrome, the world’s largest internet browser, for a price amounting to nearly double its valuation.

Perplexity AI made a $34.5 billion unsolicited all-cash offer for Alphabet's Chrome browser on Tuesday, a bid far above its own valuation as the startup reaches for the browser's billions of users pivotal to the AI search race.