Stipple Bio vs a2z Radiology AI

Side-by-side comparison of AI visibility scores, market position, and capabilities

Stipple Bio

ChallengerBioTech

Precision Oncology

Raised $100M oversubscribed Series A (Apr 2026) co-led by RA Capital and a16z Bio. Novel ADC platform targeting tumor-specific epitopes.

About

Stipple Bio is a precision oncology company that emerged from stealth in April 2026 with a $100 million oversubscribed Series A. The round was co-led by RA Capital Management, Andreessen Horowitz Bio+Health, and Nextech, with additional participation from GV and Emerson Collective — a top-tier syndicate that signals strong scientific conviction in the platform.

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a2z Radiology AI

EmergingEnterprise AI

Medical Imaging AI

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.

About

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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