AI & Machine Learning Startups

Radiant designs, builds, and operates full-stack AI infrastructure — powered land, data centers, GPU systems, networking, storage, and managed services — delivered under a single contract and control plane. It serves AI and ML teams that need to run large GPU workloads (from thousands to tens of thousands of GPUs) without assembling infrastructure from separate providers.

1 investor

Radiant Science builds AI voice agents that handle patient phone calls, appointment bookings, and clinic requests to reduce missed bookings. The company serves healthcare clinics and is led by medical professionals and AI specialists.

1 investor

Radical is a venture capital firm that invests in artificial intelligence companies, backing founders from early incubation through growth and pre-IPO stages. Its portfolio spans AI infrastructure, robotics, quantum computing, biotech, and climate technology.

1 investor

Radicle Science runs clinical trials and evidence-generation studies for wellness products—including supplements, food and beverage, and pet wellness—using large, demographically diverse datasets, DTC tests, wearables, and AI analysis. It offers a "Proof-as-a-Service" platform for brands seeking science-backed claims across health areas via RCTs, open-label, and in-home use tests.

1 investor

Radiobotics develops AI-based imaging technology for musculoskeletal (MSK) radiology, providing automated expert-level analysis of medical images. The product is aimed at healthcare and radiology providers to support diagnosis regardless of staffing or infrastructure constraints.

1 investor

Sol is a browser-based IDE that allows developers to run multiple coding agents in parallel within organized tabs, tabs, and workspaces, eliminating context switching between documentation, dashboards, and code terminals.

1 investor

RadixArk is a deep-tech company building large-scale AI inference and training infrastructure, including open-source engines and managed tooling for serving and post-training models. It targets developers, startups, enterprises, and research labs building AI systems, with a focus on open, low-cost infrastructure.

1 investor

Radley is an AI-native radiology group that reads imaging studies for hospitals and imaging centers, using AI to draft reports that its radiologists review, correct, and sign in the client's format. It provides flexible coverage for volume spikes, nights, and unfilled positions, and handles delivery to ordering providers, critical-finding notifications, and follow-up tracking.

1 investor

Doomscrollr is a social platform focused on unfiltered posting and direct-to-fan audience building, presented as an alternative to algorithm-driven feeds without algorithmic ranking or shadow bans. It targets creators and their followers who want to share and curate content on their own terms.

1 investor

Compound is an AI platform that automates financial analysis tasks like number crunching and comparative analysis, enabling finance professionals to focus on strategic decision-making. The company was founded by former researchers from Google Brain and DeepMind who specialize in large language models and natural language processing.

1 investor

Rafik provides legal operations services combining AI with expert attorneys to handle compliance, intellectual property management, and digital signatures for businesses. The platform serves Mexican and US companies with services including payroll signature processing, corporate governance documentation, and legal department operations.

1 investor

ListEngage is a Salesforce implementation and consulting partner that specializes in Marketing Cloud, Data 360, AI, and CRM solutions for enterprises across retail, financial services, healthcare, travel, and manufacturing sectors. The company provides certification-backed implementation, optimization, and ongoing campaign services across Salesforce technologies.

1 investor

RagnaRock Geo is a Norwegian technology company that builds AI software to interpret seismic and subsurface data, predicting 3D Earth models including reservoir and rock properties. It serves geophysicists and geoscientists, supporting carbon storage, exploration, development, and production workflows.

1 investor

Rahm Sensor Development builds remote monitoring systems using radar, thermal, and multi-modal sensor technologies for healthcare facilities including correctional institutions and skilled nursing facilities. The company develops real-time behavioral detection and vital sign monitoring solutions for patient safety and care.

1 investor

Raid AI provides real-time deepfake detection across audio, image, and video for enterprises, protecting meetings, calls, and communications through multimodal AI analysis with 98% accuracy and sub-50ms latency. The platform serves financial institutions, contact centers, government agencies, and media organizations, with support for 100+ languages and zero-retention privacy architecture.

1 investor

Tracsis provides computer-aided dispatching solutions for railroad operations, including train control platforms and traffic management systems designed to reduce human error and optimize resource efficiency. The company serves rail transport operators with graphically driven mainline dispatch technology supporting various control ruleset configurations.

1 investor

Rainbird provides AI decision automation software using explainable AI, enabling businesses to make informed decisions in high-stakes applications. The company serves enterprise clients requiring transparent, justifiable AI outcomes.

1 investor

Rainbow delivers hyperlocal weather forecasts using real-time satellite and radar data, with a focus on minute-by-minute precipitation nowcasting up to 4 hours in advance. The company serves multiple industries including logistics, agriculture, energy, media, retail, and financial services through both a consumer app and enterprise APIs.

1 investor

RainStella Tech (RST) builds AI-enabled virtual healthcare software, including a cloud-based EMR, a surgical workflow assistant, and a health information exchange platform for clinical personnel, healthcare systems, and emerging healthcare markets. It also provides professional services for strategy, technical design, integrations, and infrastructure deployments in the healthcare sector.

1 investor

6over3 Institute is developing "Personal Intelligence" technology aimed at augmenting human capabilities. The company operates from Tokyo and New York City.

1 investor

RAIR Technologies builds AI-powered development tools and a platform ("Labco") for building Web3 applications, particularly on the Flow blockchain. The company targets blockchain foundations, ecosystem builders, and Web3 developers seeking to accelerate development and reduce barriers to entry.

1 investor

Raise builds a financial services ecosystem for Indians to access investment, insurance, and wealth products aligned with India's growth markets. The company operates across multiple financial product categories serving the Indian market.

1 investor

Raised operates a US-based marketplace that connects startups with senior operators available for short-term engagements in sales, growth, marketing, product, and customer success. The professionals on the platform come from companies such as Miro, Revolut, Pinterest, and Coinbase and work alongside founding teams on specific growth and operational problems.

1 investor

RAIsonance builds AI that analyzes the sound of human coughs to screen for respiratory diseases, support physician evaluations, and monitor chronic respiratory conditions. It serves healthcare use cases within the respiratory health domain.

1 investor