Nasdaq-listed software services company Cognizant Technology Solutions is in talks to participate in Sarvam’s latest financing round, which is expected to value the Indian artificial intelligence startup at $3.5-4 billion – more than double the valuation in its previous round – people aware of the matter said.Sarvam is seeking to raise around $300 million in fresh funds, as ET reported on October 13.“Cognizant may end up acquiring a small stake