Perplexity AIFreemium — AI-powered search engine with cited answers
Brave LeoFreemium — Private AI assistant built into Brave browser
ConsensusFreemium — Consensus is an AI-powered academic search engine that finds evidence from peer-reviewed research papers and synthesizes findings into direct answers — so you can make evidence-based decisions faster.
Elser.aiFreemium — AI-powered semantic search and knowledge retrieval for enterprises
ExaFreemium — Neural search API for AI applications and RAG
FeloFreemium — Felo is an AI search and research tool that searches the web in real time, synthesizes answers with cited sources, and supports deep research workflows — with native multilingual support across 10+ languages.
GleanPaid — Enterprise AI search connecting and surfacing knowledge across all apps.
Haystack AIFreemium — Open-source NLP framework for building RAG and search pipelines.
Perplexity Pro SearchPaid — AI research tool with deep search, citations, and Pro Search features.
Perplexity SonarPaid — Real-time web search API powered by Perplexity AI for developers.
PhindFreemium — AI search engine and coding assistant for developers.
You.com ResearchFreemium — AI search engine with deep research mode and academic citations.