Perplexity vs DeepSeek V4: Which Is Better in 2026

Last week, I spent three hours digging through API logs trying to figure out why our team's monthly AI bill had quietly crept past $400. Turns out, we were routing simple factual lookups through a heavy reasoning model, and complex code refactors through a search-tuned QA engine. It was a mess of mismatched tools.

If you're trying to choose between Perplexity and DeepSeek V4 right now, you're probably facing a similar dilemma. These two plat