Perplexity AI
Real-time answer engine -- RAG + multi-source citation + Sonar LLM (in-house, Meta Llama based). User queries are synthesized with web search results (Context) and citation (sources) presented. Perplexity Pro combines Claude, GPT-4, Gemini, Sonar and other models. Comet and Computer expand to agentic browser and computer use areas. Real-time multi-source citation is the technical differentiator. Hallucination minimization is core.
Perplexity는 2022년 8월 Aravind Srinivas (UC Berkeley PhD, OpenAI·DeepMind), Denis Yarats (UC Berkeley PhD, OpenAI), Johnny Ho (Quora), Andy Konwinski (UC Berkeley PhD, Databricks 공동창업·Apache Spark 창시)가 공동 창업한 미국 AI 검색 회사. Sonar (Meta Llama 기반 in-house LLM) + RAG + multi-source citation으로 출처 있는 답변 엔진. 2025-09 valuation $20B, 2024년 52명. 2025-01 Galaxy AI Browse Assist 백엔드 API · Galaxy S25 시리즈 기본 검색. Comet (agentic browser) · Perplexity Computer (computer use agent)까지 라인업 확장. Wikipedia·BBC 등 저작권 분쟁 진행 중.