AI & Machine Learning Startups

Rhubarb is a community platform and AI-powered system that connects gardeners to track progress, share experiences, and access local expert support. It combines smart hardware (self-watering planters) with a social network to foster local gardening knowledge and resilience.

2 investors

Rhythms is a strategy and execution platform that provides operating system-level tools for businesses to manage objectives and goals. The company serves enterprises seeking integrated software for organizational planning and execution.

2 investors

Ribbon builds voice AI technology for recruiting that interviews every job candidate on demand, then turns those conversations into structured data and ranks applicants against a company's criteria. It serves recruiters and hiring teams, offering scoring, outreach, fraud detection, and integrations to handle hiring at scale.

2 investors

Ridge Security develops an AI-powered platform for automated penetration testing and continuous threat exposure management that validates cyber risks for enterprises. The platform uses AI-driven attack simulations to identify vulnerabilities and assess security posture without requiring specialized staff.

2 investors

Riff builds AI agents that automate the operational work behind manufacturing orders — including quoting, procurement, planning, logistics, invoice matching, and supplier follow-up — running on top of existing ERP systems like SAP, Oracle, Infor, and Microsoft. It serves manufacturers and their procurement, planning, and logistics teams, letting them scale order volume without adding headcount, with data kept in the EU.

2 investors

Riften provides a routing layer that sits between a company's applications and large language model APIs, directing each request to the least expensive capable model and using self-hosted open-weight models where possible to reduce inference costs. It also uses the resulting task data to train private, company-owned models on recurring work, serving businesses that run AI-powered applications.

2 investors

Rig is a data platform for non-technical, AI-first business teams, connecting internal tools and warehouses to sync and model data, build a governed context layer, and create dashboards, apps and automations via tools like Claude, ChatGPT or Cursor. It also offers data estate audits and migrations, targeting business users who want a governed foundation for AI projects built on their internal data.

2 investors

RightTouch builds customer support infrastructure for enterprise companies, combining generative AI with human operators to improve support experiences across web, phone, and voice-of-customer channels. Its offerings cover pre-inquiry web support, contact center optimization, VoC analysis, AI voice bots, and operator knowledge assistance.

2 investors

SOCRA AI develops AI-based learning technology that uses a Socratic questioning approach, presenting multiple AI answers so learners compare perspectives and reach conclusions themselves. Its research covers adaptive diagnosis of learner state, learning-trajectory inference, and AI tutoring for personalized education experiences.

2 investors

Ringg AI builds AI agents for businesses that operate across voice, chat, WhatsApp, and web channels, letting teams deploy a single agent across multiple channels. It offers conversational AI intelligence aimed at customer-facing and business automation use cases.

2 investors

Ringtime is an AI voice and WhatsApp assistant that automatically screens and qualifies job candidates through real conversations in 22 languages, contacting them across phone and messaging with retries. It targets high-volume frontline hiring such as temporary staffing and outsourcing agencies, working in front of existing ATS systems like Bullhorn, Connexys and Carerix.</parameter> <parameter name="founders">[]

2 investors

2 investors

Ripple is an AI-native email marketing platform that automates email design and orchestrates dynamic customer journeys based on individual behavior and business data. It replaces static email flows with personalized, continuously optimized messaging for ecommerce brands.

2 investors

Riptides provides identity, access control, and audit trails for AI agents and traditional workloads, enforcing security at the Linux kernel level so workloads receive short-lived, just-in-time credentials instead of holding long-lived API keys. It targets security and platform teams and integrates with existing secret stores, cloud IAM, and observability tools via SPIFFE, Kubernetes metadata, and federation with AWS and GCP.

2 investors

Riscosity provides an automated platform for securing sensitive data in transit, detecting and controlling outbound data transfers across a company's tech stack. It targets businesses that need to prevent sending sensitive data to unauthorized endpoints, particularly in the context of AI usage.

2 investors

Rising Academies develops evidence-based educational solutions to strengthen teaching and learning within public education systems. The company offers a suite of programs including literacy and numeracy remediation, AI-powered tutoring and teacher support tools, curriculum materials, and school management software.

2 investors

PromptWell offers an AI-native platform for healthcare organizations to turn routine member outreach into personalized, timely communications. It focuses on member engagement and healthcare education to help patients take an active role in their care.

2 investors

RiskProfiler is a platform that automates the detection, validation, and execution of takedown workflows for digital abuse and brand threats across domains, hosting providers, social platforms, and marketplaces. The platform serves security teams and enterprises seeking to protect brand integrity, reduce fraud exposure, and manage threat remediation at scale.

2 investors

Rithmm is a sports betting app that uses AI predictive models to generate win probabilities, player prop analysis, and plain-language reasoning, and compares odds across major sportsbooks and prediction markets. Aimed at everyday bettors, it lets users build their own models, copy top-ranked models, or have its AI create one, covering leagues such as NFL, NBA, MLB, WNBA, golf, and college sports.

2 investors

Riverbed provides observability and monitoring software for enterprise digital experience management, using AI to help organizations optimize application performance and resolve IT issues. The company serves large enterprises including 95% of the Fortune 100.

2 investors

Rivero provides SaaS solutions for payment operations, including fraud recovery, dispute management, and payment scheme compliance. The company serves payment network licensees and issuing banks in the European payments industry.

2 investors

Riveron is an advisory firm providing operational, accounting, and finance consulting, including interim executive services, to private equity and corporate clients. It helps clients improve processes, strengthen controls, and manage transformational change.

2 investors

Rivio provides an AI-powered revenue cycle management service for hospitals, handling auditing, insurance claim submission, denial appeals, and hidden revenue recovery. It contractually guarantees full reimbursement from health insurance plans and serves the Brazilian healthcare market.

2 investors

RIVR develops wheeled-legged robots powered by Physical AI to automate the final 100 yards of delivery, working with logistics providers to enable autonomous doorstep delivery for e-commerce and food delivery.

2 investors