Perplexity, an AI search startup, is discussing fundraising that would more than double its valuation to $8 billion, the latest indication that investor enthusiasm for AI is far from waning.

Perplexity has been on a hot streak this year: It has already raised two other funding rounds in 2024—catapulting its valuation to $250 million and then to $3 billion.

At the same time, Perplexity has