Y Combinator Summer 2025 (S25) Companies

Playgent provides reinforcement learning environments for training agents in simulated finance scenarios including trading, compliance, and document processing workflows.

1 investor

Pleom is a business intelligence tool that automatically generates insights from company data and produces visualizations without requiring users to learn specialized skills.

1 investor

Preseen provides probabilistic forecasts on geopolitical and financial events for policymakers, analysts, and investment professionals, delivering odds-based predictions on elections, conflicts, sanctions, and central bank decisions.

1 investor

ProcIndex provides AI agents that automate accounts payable, accounts receivable, reconciliation, and month-end close processes within existing ERP systems like NetSuite, SAP, and QuickBooks. The platform integrates via API to handle invoice capture, coding, approvals, vendor communications, and bank matching for finance teams.

1 investor

Proliferate is an open-source agent workspace that runs multiple AI coding agents (Claude Code, Codex, Gemini, and open models) in parallel on local or cloud infrastructure. It provides isolated execution environments, workflow automation, and integrations for developers to orchestrate and manage agent-based tasks.

1 investor

Quotain is a sales simulation platform that helps sales reps practice pitches, uncover objections, and prepare for live buyer calls through AI-powered role-play scenarios. The platform accelerates sales ramp time and coaching by building custom buyer personas, scoring practice attempts, and providing targeted drill recommendations based on real call performance.

1 investor

Reacher is a SaaS platform that automates TikTok Shop affiliate management by using AI to discover relevant creators, send personalized outreach, manage creator relationships, and track sales metrics. It serves brands and agencies looking to scale their TikTok Shop affiliate programs without manual creator management.

1 investor

RealRoots is a women's community platform that matches compatible women in the same city for in-person social experiences, including guided group events, one-on-one introductions, and social clubs. The company organizes the logistics and facilitates friendship formation among members across 150+ cities in the US, Canada, and the UK.

1 investor

Rebulk provides software and computer vision technology to track and manage bulk material inventory across industries like agriculture, recycling, and logistics. The platform uses cameras, LiDAR, and AI to replace manual estimates and guesswork in managing stockpiles and transload operations.

3 investors

Relling deploys intelligent robots to perform high-mix manufacturing tasks on production lines. The company combines speed with precision to avoid costly manufacturing disruptions.

2 investors

Risely is an agentic AI platform designed for higher education institutions that orchestrates AI agents to optimize campus operations, support student retention, and revenue generation. The platform integrates with existing institutional systems like SIS, LMS, and CRM to automate enrollment management, student advising, and donor stewardship at scale.

4 investors

Riverbank provides offensive security assessments using autonomous AI agents paired with human operators to identify vulnerabilities in organizational systems. The company targets the penetration testing market by using AI-driven approaches to discover issues that conventional vulnerability scanning tools overlook.

1 investor

RowFlow converts traditional web forms into AI-driven conversational interfaces that operate via text, Slack, or embedded chat, enabling companies to collect structured data from users while improving response rates and reducing administrative overhead.

1 investor

Ruvo provides a mobile app for Brazilian users to send, spend, and save money across USD, BRL, and USDT with no markups or hidden spreads. The company focuses on enabling frictionless international money transfers and global financial access for Brazilians.

3 investors

Sapien builds simulated populations based on real behavioral data to test business and product decisions before implementation. The platform models how different audience segments will respond to decisions, using actual transaction records and interview data rather than stated preferences.

1 investor

Serafis indexes podcasts, interviews, and independent media to extract structured intelligence about companies and themes. The platform provides programmatic access via API, AI agent tools, and data warehouse integrations for financial and investment professionals seeking market-moving narratives.

1 investor

Shor provides international payroll and contractor payment services, allowing startups to hire employees and contractors globally and run payroll on autopilot. The platform handles compliance, tax forms, and cross-border payments in over 25 currencies and countries.

1 investor

SigmanticAI provides an AI platform for semiconductor teams to automate hardware verification and RTL development using specialized agents that understand design code, run EDA tools, and manage coverage across the design workflow.

2 investors

Sira provides an AI-powered platform that automates time tracking, scheduling, payroll, and HR functions for hourly and shift-based workers. The system uses intelligent agents to handle tasks such as shift staffing, timesheet verification, and payroll administration for hourly-focused businesses.

1 investor

An AI tool that speeds up email management and processing for inbox users.

1 investor

Socratix provides AI agents for fraud detection and compliance investigations at financial institutions. The platform helps community banks and credit unions investigate alerts, identify threats, and generate regulatory filings in real time.

2 investors

Solva provides AI infrastructure for insurance operations, combining deep insurance domain expertise with advanced AI engineering to handle real claims processing, documents, and regulatory compliance at scale.

1 investor

Spotlight Realty is an AI-powered real estate platform serving property sellers and landlords in New York City and Long Island, offering reduced commission rates (1.5% for sellers, 4% for landlords) compared to traditional brokers. The platform combines machine learning algorithms with agent expertise to match buyers and sellers in residential real estate transactions.

1 investor

Stagewise builds an open-source platform for autonomous AI agents that can work across multiple systems, applications, and databases with rich environmental context and user-defined limits. The platform is designed to enable agents to perform autonomous work across software development and broader enterprise environments for teams and companies of any size.

1 investor