Butterfly Network vs RapidAI
An independent 2024 AJNR paper compared CT perfusion output from RapidAI and Viz.ai in acute ischemic stroke and found the volumes not interchangeable. That matters to a stroke program choosing a platform, and RapidAI sells to such programs on an enterprise license at hospital level, with Rapid LVO cleared as K200941 and modules for CT perfusion, ASPECTS and ICH. The homepage claims use in 2,500+ hospitals, which is a marketing figure.
Butterfly's Gestational Age Tool, cleared as K252148 in March 2026, is aimed at an obstetric practice. It needs an iQ+ or iQ3 plus the Advanced membership, which costs $420 a year plus the probe (currency not stated). RapidAI's license is written for a stroke program reading CT, and the Gestational Age Tool for a practice scanning pregnancies with a handheld probe.
Radiology · Reviewed November 2, 2026
Butterfly Network
by Butterfly Network, Inc.
Butterfly iQ handheld whole-body ultrasound probe line, with FDA-cleared AI tools for bladder volume and gestational age.
RapidAI
by RapidAI · founded 2017
Imaging platform for stroke, aneurysm, aortic and pulmonary embolism care, with CT perfusion, LVO and ICH modules.
When to pick each one
Butterfly Network
- Gestational Age Tool cleared as K252148
- Needs iQ+ or iQ3 plus Advanced membership
RapidAI
- Rapid LVO triage cleared as K200941
- CT perfusion, ASPECTS and ICH modules
- Hospital-level enterprise license
Score
Each row shows points earned of points available under the published rubric.
Butterfly Network
66of 100
RapidAI
65of 100
| Dimension | Butterfly Network | RapidAI | Difference |
|---|---|---|---|
| FDA clearance | 18 / 18 | 18 / 18 | 0 |
| HIPAA / SOC2 / BAA | 6 / 10 | 0 / 10 | +6 |
| 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 | 12.7 / 18.2 | 0 |
| RCT / meta-analysis / systematic review | 7.8 / 7.8 | 3.9 / 7.8 | +3.9 |
| Funding & adoption signal | 8.4 / 12 | 8.4 / 12 | 0 |
| Pricing transparency | 2.5 / 5 | 5 / 5 | -2.5 |
| Years in market | 0 / 6 | 6 / 6 | -6 |
Scroll horizontally to see every column.
Pricing
Butterfly Network
| Tier | Monthly | Annual | Notes |
|---|---|---|---|
| Butterfly iQ3 device | n/a | n/a | Device price, 3-year warranty. Shown with a dollar sign on the page, currency not otherwise stated. |
| Butterfly iQ+ device | n/a | n/a | Device price, 1-year warranty. Also stated as starts at $2,699 in the FAQ. |
| Core Technology membership | n/a | n/a | Plus probe. 1 seat, 2 probes online. |
| Advanced Technology membership | n/a | n/a | Plus probe. Adds Doppler modes, iQ Slice, iQ Fan, Biplane, Needle Viz and the AI tools Auto Bladder Volume and Auto B-Line Counter. |
| Advanced Technology one-time | n/a | n/a | Plus probe. Software access guaranteed for 5 years, no recurring fees required. |
RapidAI
| Tier | Monthly | Annual | Notes |
|---|---|---|---|
| Plan | n/a | n/a | Enterprise. |
Evidence
Butterfly Network
FDA decisions
K252148 (opens in new tab)510(k)2026-03-27
Butterfly Gestational Age Tool
K200980 (opens in new tab)510(k)2020-06-11
Auto 3D Bladder Volume Tool
Peer-reviewed
4 PubMed records name Butterfly Network.
- Comparison of in-person versus virtual ultrasound instruction for pediatric residents. (opens in new tab)
- Comparison of Six Handheld Ultrasound Devices by Pediatric Point of Care Ultrasound (POCUS) Experts. (opens in new tab)
- Breast assessment using next generation handheld ultrasound device based on silicon chips: a pilot study in senology. (opens in new tab)
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)
Compliance and integrations
Documented from each vendor’s own pages.
| Spec | Butterfly Network | RapidAI |
|---|---|---|
| Free tier | ||
| HIPAA | ||
| SOC 2 Type II | ||
| EHR integrations | Not specified | Not specified |
| Founded | n/a | 2017 |
| HQ | n/a | 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.