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SourceCompany research
Public company, workplace, funding, and market signals
Updated Jul 29, 2026
Overview
RedBrick AI (legal entity Zantula, Inc.) is a radiology-focused, browser-based medical data annotation platform for healthcare AI teams. It combines 2D/3D annotation, collaborative review/consensus workflows, and compliance-oriented data handling for building clinical-grade training datasets. Most public sources place the company’s founding in 2020, although YC’s profile lists 2021.
Primary product
Browser-based radiology and medical data annotation platform
Founded
2020
Headquarters
Claymont, Delaware, United States
Team size
1-10
Work style
Remote
Industry
Software Development
Sub-industry
Radiology AI / medical data annotation SaaS
Offices
2093 Philadelphia Pike, Suite 1940, Claymont, DE 19703, United States
Business model
subscription SaaS
per-user subscriptions
enterprise software
metered add-on / usage-based Boost
Funding
Stage
Seed
Total raised
$5.2M
Latest round
Seed · Nov 2022
Latest amount
$4.6M
Nov 2022 · Surge / Peak XV Partners
Mar 2022 · Y Combinator
Feb 2022 · Y Combinator
People & investors
Investors
Work & culture
Mission-driven healthcare AI team with a fast-paced, collaborative, high-ownership culture. Public job posts emphasize direct product impact, strong user focus, and flexibility/remote-friendly roles, with a heavy bias toward shipping practical tooling for radiology teams.
Work style
Remote
Compensation
Public job ads and listings signal competitive compensation, equity, and role-specific bonuses. One India role listing quoted ₹17L-₹40L/year for a React.js role, while SDR postings highlighted performance-based commission, unlimited PTO, and a fully remote-friendly work environment.
Benefits
competitive compensation
equity
unlimited PTO
remote-friendly work environment
medical insurance
PF / retirement benefits
annual company holidays
annual increments
Diwali bonus
spot bonuses
clear growth path
Product & market
Pricing
Subscription-based, typically per-user; Boost is charged as an hourly metered add-on.
Differentiators
- —Radiology-specific annotation workflows for CT, MRI, X-ray, and other medical modalities
- —Browser-based 2D/3D annotation with collaborative review and consensus workflows
- —F.A.S.T. and Boost AI-assisted segmentation features
- —APIs, SDK, and CLI for MLOps integration
- —Compliance-oriented data handling for FDA/CE-oriented workflows
- —Helps teams avoid building and maintaining in-house annotation tooling
Technology
React
Python
JavaScript
Swift
Storybook
AWS S3
Amazon DynamoDB
Google Cloud Platform
Google Cloud Storage
Azure
SDK
CLI
MLOps
Customers
Annalise.ai
RapidAI
Qure.ai
Olea Medical
Radiomics.bio
Orbem
Prenuvo
Mass General Brigham
Deeptek
Competitors
3D Slicer
ITK-SNAP
Labelbox
Quibim
TomTec Imaging Systems
Sirona
Advantis Medical Imaging
Pie Medical Imaging
Scale & contact
Estimated revenue
$1M-$10M
Estimated monthly visits
16.3K
Traffic estimate as of Jul 2026
Signals & risks
Latest news
RedBrick AI Blog · Jul 2025
Launches a brush-based 3D segmentation tool and ties it to RedBrick AI Boost, which enables self-hosted AI-assisted annotation features for privacy/compliance-sensitive customers.
openPR · Mar 2025
Announces a partnership to accelerate medically relevant training-data creation and highlights improved annotation efficiency for CT, MRI, and X-ray workflows.
RedBrick AI Blog · Feb 2025
Covers product and workflow updates, including PWA desktop support, Boost, workflow improvements, and performance upgrades.
RedBrick AI Blog · Apr 2024
Customer story showing Annalise.ai using RedBrick AI for large-scale radiology annotation, label validation, and active-learning workflows.
RedBrick AI Blog · Feb 2024
Customer story describing RapidAI’s use of RedBrick AI for stroke and cardiovascular annotation workflows and how the platform improved review and reliability.
Jobs and careers at RedBrick AI
0 jobs at RedBrick AI
No open positions
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