Side-by-side comparison of AI visibility scores, market position, and capabilities
1B+ monthly queries; 240M website visits/month; AI search category leader. $9B valuation; Perplexity Pro with GPT-4o and Claude 3.7 access. Sonar API for AI-native search in agentic applications. 15M+ registered users.
Perplexity AI is an AI-powered answer engine that provides direct, sourced responses to user queries by searching the web in real time and synthesizing information through large language models. Founded in 2022 and headquartered in San Francisco, Perplexity was created by Aravind Srinivas (formerly OpenAI), Denis Yarats, Johnny Ho, and Andy Konwinski with the vision of replacing the traditional search engine's link-based results with direct, cited answers that users can trust and verify.
a2z Radiology AI raised $20M in 2025 for its whole-body AI that simultaneously screens for 24+ conditions across CT scans — from incidental cancers to cardiovascular risk — in a single automated read.
a2z Radiology AI has developed a whole-body CT analysis platform that simultaneously screens for over 24 medical conditions across a single CT scan, including incidental cancers, coronary artery disease, aortic aneurysm, bone density loss, and organ abnormalities. The AI acts as a second reader that radiologists can use to catch incidental findings that fall outside the primary reason for a scan — a major source of missed diagnoses.
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