Illustration by Pavlo Gonchar/SOPA Images/LightRocket via Getty ImagesAI startup Perplexity bids to merge with TikTok's US business before potential shutdown.Perplexity was recently valued at $9 billion, a lot less than the estimated value of TikTok US.Perplexity backers include SoftBank and Nvidia, with $914 million in funding secured: PitchBook.Hours before TikTok could go dark, AI startup Perplexity has put in a bid to merge with the platform's US business, according to a person familiar with the matter.It's unclear how a startup of Perplexity's size could merge with an operation this huge.