HeartFlow vs Viz.ai
HeartFlow and Viz.ai both compete in radiology, but answer different questions. HeartFlow is our pick for reimbursable CCTA AI: Non-invasive CCTA-derived FFR, reimbursable since CPT 75577 (Jan 2026). Viz.ai earns the stroke + cardio coordination slot: Stroke + cardio + PE coordination at 1,700+ US hospitals. The right choice depends on whether your priority is reimbursable ccta ai or stroke + cardio coordination.
- Radiology
- 02
- October 20, 2026
HeartFlow
by HeartFlow · founded 2007
Coronary CT angiogram analysis: CT-derived fractional flow reserve (FFRct), plaque analysis and a CCTA reading aid.
- No public list price. The 10-K describes revenue as pay-per-use.
- FDA De Novo / FDA 510(k) / CE Mark (FFRct Analysis, 2011)
Viz.ai
by Viz.ai · founded 2016
Care coordination platform with FDA-cleared imaging AI for stroke, vascular and cardiac conditions.
- No public price. Sold to health systems after a demo request.
- FDA 510(k) (multiple) / FDA De Novo (ContaCT, Viz HCM) / HIPAA
How HeartFlow and Viz.ai compare
Pricing, compliance, and integrations sourced from vendor documentation. Verified October 20, 2026.
| Spec | HeartFlow | Viz.ai |
|---|---|---|
| Pricing | No public list price. The 10-K describes revenue as pay-per-use. | No public price. Sold to health systems after a demo request. |
| Free tier | ||
| HIPAA | ||
| SOC 2 Type II | ||
| EHR integrations | Not specified | Not specified |
| Founded | 2007 | 2016 |
| HQ | US | US |
| Best for | Best reimbursable CCTA AI | Best for stroke + cardio coordination |
Scroll horizontally to see both columns.
When to pick each one
Best reimbursable CCTA AI
Non-invasive CCTA-derived FFR, reimbursable since CPT 75577 (Jan 2026).
- Most clinical-evidence-backed CCTA AI
- IPO filed 2026
- Eliminates invasive angiography for many patients
Best for stroke + cardio coordination
Stroke + cardio + PE coordination at 1,700+ US hospitals.
- 50+ FDA clearances
- Strongest care-coordination workflow layer beyond pure detection
Other head-to-heads worth reading
Open the full radiology comparison
Acute-care triage, mammography screening, CCTA plaque analysis, mobile MRI. 30+ FDA-cleared platforms across stroke, oncology, cardiac. Enterprise sales only — we compared what's deployed where.