Perplexity has redefined search with the launch of Comet, an AI-powered browser with a persistent Perplexity sidebar and Background Assistants. Every claim is cited for instant verification. Access advanced models including GPT-5.1 Thinking, Claude Opus 4.5, and o3-pro. Deep Research mode generates comprehensive multi-step reports. The Pro plan ($20/mo) offers 20 research queries/day, while Max ($200/mo) provides unlimited research with video generation (15/month). Enterprise tiers ($40-325/seat) include SOC 2-aligned security. Snapchat integration launches in early 2026, bringing AI answers directly into the app.