AI & Machine Learning Startups

Reo.dev is a go-to-market platform that uses AI agents and technical buying signals from over 50 sources to help sales teams identify in-market accounts, map technical profiles to economic buyers, and run personalized outreach. It is built for GTM teams selling to technical buyers in categories such as AI infrastructure, developer tools, data infrastructure, and security, and integrates with tools like Slack, Claude (via MCP), CRMs, and a Chrome plugin.

6 investors

Repeat is a lifecycle marketing platform that identifies key customer moments (replenishment, cross-sell, lapse risk) and automates personalized retention campaigns via email and SMS integrations. It serves direct-to-consumer and ecommerce brands looking to drive repeat purchases and improve customer retention.

6 investors

Rephrase AI is an online writing tool that rewrites sentences, paragraphs, and full drafts to adjust tone, formality, brevity, and complexity. It targets writers, researchers, marketers, and founders looking to refine wording while keeping their original meaning.

6 investors

Replicate builds tools that make AI models accessible to software engineers through simple APIs and abstractions, similar to standard software libraries. The platform enables developers to use, deploy, and customize machine learning models as easily as working with conventional software packages.

6 investors

Luka is a software development company that builds AI-powered chatbot apps, including a messenger assistant and Replika, an AI companion app designed to help people cope with loneliness. The company uses its own deep learning architecture to power conversational AI friends.

6 investors

Resolve builds software for reviewing 3D BIM (building information models) to help construction teams detect design issues early and reduce rework. The platform combines web-based collaboration, VR reviews, and AI-driven spatial navigation, and has been used on data center, pharma, water treatment, and healthcare projects.

6 investors

Resourcly is an AI-driven platform that unifies PLM and ERP data to help manufacturing and engineering teams manage product complexity, reduce costs, and optimize supply chain operations. It serves procurement, engineering, finance, and operations teams across manufacturers by automating parts consolidation, inventory analysis, and supplier management.

6 investors

Resurrect Bio develops more durable crop disease resistance by engineering plant immune receptors, combining plant molecular immunology, computational biology, AI, and high-throughput screening. The company, spun out of The Sainsbury Laboratory in Norwich, serves the agricultural sector with crop protection against evolving plant diseases.

6 investors

Retention Science (ReSci) offers AI-based marketing technology that helps brands automate and improve their marketing to sell more. It serves emerging brands and Fortune 500 companies.

6 investors

Retraced provides a digital platform that enables fashion brands to collect, track, and communicate supply chain data to meet EU Digital Product Passport requirements and demonstrate sustainability compliance. The platform helps brands achieve supply chain transparency, manage regulatory adherence, and support circular economy practices in the fashion industry.

6 investors

Revalia Bio uses AI to convert donated human organs and tissues into multi-modal biological datasets and decision-ready insights for drug and device development. It operates an Organ ICU facility and works with organ procurement organizations and healthcare institutions to serve pharma, biotech, and medical device companies.

6 investors

Ricursive Intelligence is an AI lab building self-improving systems, initially applied to chip design by closing the loop between AI and hardware. It serves the semiconductor and AI development space, drawing on research such as AlphaChip.

6 investors

RightRev provides an AI-powered revenue recognition platform that automates rev rec calculations, contract modifications, SSP allocation, and journal entries with traceable, auditable rules. It offers both a standalone API-first application and a Salesforce-native application for finance and accounting teams across subscription, usage, and hybrid revenue models.

6 investors

Rill builds real-time data tooling covering data transformation, database architecture, and metrics exploration to help data teams create and explore operational dashboards. It was founded by the original creators of Apache Druid and is focused on open source software.

6 investors

Rilla augments content delivery networks with an AI-orchestrated peer-to-peer network layer to reduce costs and improve streaming performance for broadcasters and content platforms. The company targets streaming infrastructure providers seeking to optimize scalability and quality at large scale.

6 investors

Rippleshot offers a cloud-based (SaaS) platform that uses machine learning and predictive analytics to help financial institutions detect card fraud, identify merchant data breaches, and manage fraud risk proactively. It serves banks of all sizes, from small banks to large institutions.

6 investors

Roam is a company building an online workplace product, presented through its team and leadership page. The site names its founders and board members but gives limited detail about the product itself.

6 investors

Rookout provides log analytics and observability platform for developers to search, filter, and visualize logs from applications and infrastructure. The platform enables real-time debugging, performance analysis, and AI-assisted delivery across development and production environments.

6 investors

Row64 provides real-time data visualization and analytics software that uses GPU-accelerated rendering to enable organizations to explore large datasets and make rapid, data-driven decisions. The platform is designed for enterprises that require high-performance, interactive data analysis at scale.

6 investors

Rune Technologies provides AI and software solutions for logistics and sustainment operations, serving military and defense organizations. The company combines military expertise with private technology development to optimize critical operations execution.

6 investors

Rylo is a free call captioning and live transcription mobile app that provides real-time captions for phone calls, voicemails, and in-person conversations, with support for 50+ languages. It is designed for people who are Deaf, hard of hearing, or have speech disabilities, and operates as an FCC-certified captioned telephone and IP Relay service.

6 investors

Ryse operates an online marketplace connecting real estate owners and property managers with financial institutions to access customized financial products, particularly solutions that allow landlords to access rental income early to manage cash flow needs.

6 investors

Saama provides AI-based data analytics solutions and services for the life sciences industry, with a focus on accelerating clinical trials. Its offerings also extend to sectors including banking and capital markets, consumer goods, insurance, and the public sector.

6 investors

Mitti (SafetyCulture) offers a workplace operations platform for improving safety and operational processes across teams. The page shown provides no substantive detail about the product's features or target customers.

6 investors