RapidAI vs Viz.ai
An AJNR comparison in acute ischemic stroke found that CT perfusion volumes from RapidAI and Viz.ai are not interchangeable, so the platform picked shapes the numbers a team acts on. RapidAI's clearances run from iSchemaView RAPID in 2013 through Rapid ICH, ASPECTS and LVO in 2020 to Rapid 6.0 in 2024, and the vendor claims 2,500+ hospitals. Neuro-interventional teams that want perfusion, ASPECTS and LVO in one workflow fit Rapid.
A single-center retrospective study promoted by RapidAI reported 98% of confirmed LVOs detected against 73% for Viz.ai across about 1,590 code strokes. Viz.ai's FDA record has 12 entries, including De Novo authorizations for ContaCT and Viz HCM, and its transfer coordination suits a stroke network moving patients between hub and spoke sites. Viz lists HCM, ACS and cardiac amyloidosis, and Rapid's listed modules include no cardiac one. A health system that wants cardiac alerts next to stroke has to choose Viz, and Rapid loses that buyer.
Radiology · Reviewed November 2, 2026
When to pick each one
RapidAI
- CT perfusion, ASPECTS, LVO and ICH modules
- Vendor claims 2,500+ hospitals in 100+ countries
- Perfusion comparison against Viz.ai published in AJNR
Viz.ai
- HCM, ACS and cardiac amyloidosis alongside stroke
- ContaCT and Viz HCM De Novo authorizations
- Mobile alerts and transfer coordination for stroke networks
Score
Each row shows points earned of points available under the published rubric.
RapidAI
65of 100
Viz.ai
89of 100
| Dimension | RapidAI | Viz.ai | Difference |
|---|---|---|---|
| FDA clearance | 18 / 18 | 18 / 18 | 0 |
| HIPAA / SOC2 / BAA | 0 / 10 | 10 / 10 | -10 |
| EHR integrations (count) | 0 / 4.2 | 0 / 4.2 | 0 |
| Top-3 EHR coverage (Epic / Oracle / Athena) | 0 / 2.4 | 0 / 2.4 | 0 |
| Peer-reviewed papers | 12.7 / 18.2 | 18.2 / 18.2 | -5.5 |
| RCT / meta-analysis / systematic review | 3.9 / 7.8 | 7.8 / 7.8 | -3.9 |
| Funding & adoption signal | 8.4 / 12 | 12 / 12 | -3.6 |
| Pricing transparency | 5 / 5 | 2.5 / 5 | +2.5 |
| Years in market | 6 / 6 | 6 / 6 | 0 |
Scroll horizontally to see every column.
Pricing
RapidAI
| Tier | Monthly | Annual | Notes |
|---|---|---|---|
| Plan | n/a | n/a | Enterprise. |
Viz.ai
| Tier | Monthly | Annual | Notes |
|---|---|---|---|
| Enterprise | n/a | n/a | No public price. Sold to health systems after a demo request. |
Evidence
RapidAI
FDA decisions
K233512 (opens in new tab)510(k)2024-01-16
Rapid (6.0)
K213165 (opens in new tab)510(k)2022-02-08
Rapid
K200941 (opens in new tab)510(k)2020-07-09
Rapid LVO
K200760 (opens in new tab)510(k)2020-06-26
Rapid ASPECTS
K193087 (opens in new tab)510(k)2020-03-31
Rapid ICH
Show 2 more
K182130 (opens in new tab)510(k)2018-12-27
iSchemaView RAPID
K121447 (opens in new tab)510(k)2013-10-04
ISCHEMA VIEW RAPID
Peer-reviewed
4 PubMed records name RapidAI.
- A Comparison of CT Perfusion Output of RapidAI and Viz.ai Software in the Evaluation of Acute Ischemic Stroke. (opens in new tab)
- Transforming Stroke Diagnosis with Artificial Intelligence: A Scoping Review of Brainomix e-Stroke, Aidoc, RapidAI, and Viz.ai. (opens in new tab)
- Impact of RapidAI mobile application on treatment times in patients with large vessel occlusion. (opens in new tab)
Viz.ai
FDA decisions
K250354 (opens in new tab)510(k)2025-06-10
Viz Subdural+
K232363 (opens in new tab)510(k)2024-02-05
Viz HDS, Viz Volume Plus, Viz ICH+
DEN230003 (opens in new tab)De Novo2023-08-03
Viz HCM
K223443 (opens in new tab)510(k)2023-03-17
Viz AAA
K223042 (opens in new tab)510(k)2022-10-21
Viz LVO (ContaCT)
Show 7 more
K221100 (opens in new tab)510(k)2022-08-29
Viz RV/LV
K220439 (opens in new tab)510(k)2022-07-25
Viz SDH
K213319 (opens in new tab)510(k)2022-02-18
Viz ANEURYSM
K210209 (opens in new tab)510(k)2021-03-23
Viz ICH
K193658 (opens in new tab)510(k)2020-03-18
Viz ICH
K180161 (opens in new tab)510(k)2018-04-20
Viz CTP
DEN170073 (opens in new tab)De Novo2018-02-13
ContaCT
Peer-reviewed
5 PubMed records name Viz.ai.
- Automated Emergent Large Vessel Occlusion Detection Using Viz.ai Software and Its Impact on Stroke Workflow Metrics and Patient Outcomes in Stroke Centers: A Systematic Review and Meta-analysis. (opens in new tab)
- Revolutionizing Intracranial Hemorrhage Diagnosis: A Retrospective Analytical Study of Viz.ai ICH for Enhanced Diagnostic Accuracy. (opens in new tab)
- Real-world evaluation of the accuracy of the Viz.AI automated intracranial hemorrhage volume calculation tool. (opens in new tab)
Compliance and integrations
Documented from each vendor’s own pages.
| Spec | RapidAI | Viz.ai |
|---|---|---|
| Free tier | ||
| HIPAA | ||
| SOC 2 Type II | ||
| EHR integrations | Not specified | Not specified |
| Founded | 2017 | 2016 |
| HQ | US | US |
Scroll horizontally to see both columns.
Common questions
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.