Y Combinator Summer 2023 (S23) Companies

Prosper provides AI agents to healthcare organizations to improve operational efficiency and patient access to care. The platform integrates with existing practice management and revenue cycle management systems to deliver scalable solutions with real-time analytics.

2 investors

Punchcard is an AI-powered audit workspace that automates document collection, workpaper generation, and review for auditing teams. It serves audit firms and their clients by replacing manual audit processes with collaborative AI agents and structured request flows.

1 investor

Collectpure operates a marketplace for buying and selling gold, silver, and rare coins, with dedicated concierge support for traders and collectors.

2 investors

Quill Bills automates revenue cycle management for independent healthcare practices, handling insurance claims processing, eligibility verification, denial management, and patient billing through AI agents and EHR integration. The platform reduces manual work in coding, claim submission, payment posting, and collections.

2 investors

RankAI builds AI-powered tools that automatically generate, publish, and optimize web content for SEO ranking and conversion. It serves marketing teams at B2B SaaS and enterprise companies looking to scale organic traffic through programmatic content creation.

3 investors

Read Bean is a mobile app for learning Chinese through graded readings adapted from real news and authentic content, personalized to the learner's proficiency level from HSK 1 to 6. The app serves language learners of all levels with daily curated readings, vocabulary tools, and AI-refined content created by native speakers.

1 investor

Readily is an AI-powered compliance platform for healthcare organizations that automates regulatory analysis, audit management, and policy updates. It helps healthcare teams stay compliant by connecting regulatory changes to policies and operations in a single system.

1 investor

RecipeUI is an open source tool for testing and debugging APIs that lets non-backend engineers diagnose API failures independently.

1 investor

Refine is an open-source web application framework that helps organizations build web applications faster with fewer resources. The company develops the open-core framework and related ecosystem products.

3 investors

Remy provides automation software that handles insurance administration tasks for medical practices, including benefit verification calls and claims status inquiries.

1 investor

Repaint is an AI-powered website builder that reconstructs existing websites by importing content and design, then allows users to modify layout, content, and styling through a chat interface. The platform serves small businesses and professionals who want to redesign their websites without manual rebuilding work.

1 investor

Revamp AI provides email marketing personalization and engagement tools for e-commerce businesses, enabling revenue optimization through AI-driven customer communication strategies.

3 investors

Reworkd is an AI-powered web data extraction platform that automates end-to-end data scraping and monitoring from websites at scale without requiring code. The platform serves businesses and data teams that need to collect, validate, and maintain large volumes of web data across multiple sources.

2 investors

Rimward provides an AI-powered software layer that converts existing CCTV surveillance into intrusion and theft detection alerts for remote outdoor sites like solar farms. The platform works read-only on installed cameras without requiring hardware replacement and is tuned specifically for copper theft prevention and perimeter security at monitored technical sites.

1 investor

Roame is a flight and hotel search engine that helps travelers find and redeem premium accommodations and flights using airline and hotel loyalty points and miles.

1 investor

Saatvy offers personalized health plans created by Ayurveda practitioners to help patients with chronic conditions like digestive issues, sleep disorders, diabetes, and arthritis identify underlying causes of their health problems. The platform connects patients with experienced Ayurvedic practitioners who develop tailored wellness plans based on natural medicine principles.

1 investor

SafetyKit provides an AI-powered fraud detection and abuse prevention platform for online marketplaces and platforms. The system uses a Network Foundation Model to ingest user actions via SDK and API, analyze behavioral signals in real-time, and automatically investigate cases to reduce manual review burden.

1 investor

Santé builds a point-of-sale system designed specifically for liquor retail stores. The software helps liquor business operators modernize their store management and operations.

6 investors

Sendblue provides an iMessage API and business messaging platform that enables companies to send and receive real iMessages with automatic fallback to RCS and SMS. It serves sales teams and enterprises that need reliable customer communication through the messaging channel.

1 investor

Serra operates a platform for hiring and managing skilled trades workers, handling job posting, worker matching, vetting, scheduling, and payment for heavy equipment and warehouse roles.

1 investor

Shadeform is a GPU cloud marketplace that enables users to deploy high-performance GPUs across 30+ cloud providers worldwide through a unified platform. The service offers centralized billing, support, and pricing optimization for AI workloads, allowing customers to save up to 90% compared to major cloud providers.

2 investors

Shasta provides AI agents that automate healthcare administrative workflows including patient eligibility verification, insurance communication, phone call handling, and referral management for healthcare providers. The platform integrates with existing EMR systems to reduce manual data entry and improve patient scheduling and verification processes.

1 investor

SID trains agentic search models that improve search accuracy and performance on complex search tasks by providing better contextual understanding. The company develops AI models designed to connect intelligence to the world through advanced search capabilities.

1 investor

SideNote is a real-time workplace communication monitoring and coaching platform that uses AI to detect and prevent legal, compliance, and policy violations before messages are sent. The solution analyzes language in employee communications across email, chat, and documents, providing immediate guidance and aggregated insights to HR, compliance, and security teams.

1 investor