f9000是5g吗

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www.perplexity.ai

Perplexity AI

Perplexity is a free AI-powered answer engine that provides accurate, trusted, and real-time answers to any question.

en.wikipedia.org

Perplexity AI - Wikipedia

Perplexity AI, Inc., or simply Perplexity, is an American privately held software company offering a web search engine that processes user queries and synthesizes responses. [4]