Real-time conversational search engine, multi-source research agent, and Sonar live-grounded API.
Technical Overview & Architecture
Perplexity AI is an AI-powered conversational search and discovery engine that replaces traditional search indices with synthesized, citation-backed answers. By orchestrating live web crawling, real-time index retrieval, and frontier LLM synthesis (Sonar, Claude 3.5 Sonnet, GPT-4o), Perplexity provides fact-grounded responses with clickable numbered citations, multi-step Pro Search reasoning, domain filtering, and the Sonar API for developers needing grounded web search in automated pipelines.
Pricing Breakdown
Transparent tiers and feature allotments for engineering teams.
Free
zsh/mo
- Unlimited standard search
- 5 Pro searches / 4 hours
- Standard citations
Most Popular
Pro
/mo
- 300+ Pro searches/day
- Frontier model switching (Claude 3.5 Sonnet, GPT-4o)
- Unlimited document uploads
- /mo Sonar API credits
Most Popular
Enterprise Pro
/seat/mo
- SOC2 Type II compliance
- SAML SSO & user management
- Zero data retention for AI training
Compare Perplexity AI Against Alternatives
See how Perplexity AI stacks up against competitor tools across speed, APIs, and pricing.