Table of Contents
Y Combinator 2025 Startups Overview features four batches: Winter (W25), Spring (X25), Summer (S25), and Fall (F25). Each batch focuses on innovative startups, with a strong emphasis on AI-driven solutions across industries like healthcare, sales, finance, and developer tools. The lists below are compiled from available sources and may not be exhaustive. For complete and updated information, refer to the official YC directory at https://www.ycombinator.com/companies.
Winter 2025 (W25) Batch
- Demo Day: March 13, 2025
- Key Focus: AI infrastructure, developer tools, and vertical AI applications
- Number of Startups: Over 160
| Startup Name | Industry | Short Description |
|---|---|---|
| Abundant | AI Infrastructure | Marketplace treating Pokémon cards and collectibles like stocks with a bid/ask system. |
| Browser Use | AI Developer Tools | A platform for human teleoperation of AI agents when they fail. |
| GradeWiz | Education AI | AI grading tool for educators. |
| Misprint | E-commerce / Collectibles | Autonomous patrol boats for sea borders with an 800-mile range. |
| Nextbyte | AI HR Tech | AI-powered interviews to identify skilled AI-assisted coders. |
| Pickle | Consumer AI | AI tool for personalized recommendations. |
| Rebolt | Energy / Sustainability | AI-optimized battery management or charging. |
| Red Barn Robotics | Robotics / Agriculture | Robotic solutions for farming or industrial automation. |
| Retrofit | AI E-commerce | AI-curated marketplace for vintage clothing based on trends. |
| Splash | Defense Tech / Autonomy | AI agents are replacing law firm admins and acting as sales teams. |
| Optifye | Industrial HR | Software for managing factory workers. |
| Artificial Societies | AI Social Media | AI simulations to test LinkedIn post performance. |
| Caseflood | Legal Tech AI | AI agents replacing law firm admins and acting as sales teams. |
| careCycle | Healthcare AI | AI voice teams for Medicare and ACA patient matching. |
| Calltree AI | Customer Service AI | Analyzes call center workflows to reduce costs. |
| Tally | FinTech AI | AI agents for automating accounting, tax, and audits. |
| Bluebook | FinTech AI | AI accounting agents to handle more clients. |
| Toothy AI | Healthcare AI | Automates back-office for dental clinics. |
| Agentin AI | Enterprise AI | AI agents for data movement and actions in enterprise systems. |
| Casixty | Marketing AI | Reddit AI marketing agent. |
| FuseAI | Sales AI | AI sales agents. |
| Outlit | Sales AI | AI for closing enterprise deals. |
| SalesPatriot | Defense Sales AI | AI sales for defense firms. |
| Solidroad | Sales AI | AI for sales and support training. |
| Ergo | Sales Operations AI | AI agents for sales operations. |
| Cuckoo | Sales AI | Real-time AI translator for sales calls. |
ASLO READ: Perseus Defense (YC S25) Launches to Build America’s “Iron Dome” for Drones
Spring 2025 (X25) Batch
- Demo Day: June 2025
- Key Focus: AI productivity, developer tools, and industry-specific applications (e.g., real estate, healthcare)
- Number of Startups: Not specified; first Spring batch
| Startup Name | Industry | Short Description |
|---|---|---|
| Cactus | Business Tools AI | AI assistant handling calls, leads, and bookings for solopreneurs. |
| Den | Productivity AI | AI agents for non-technical knowledge workers, enabling swarm orchestration. |
| Better Auth | Dev Tools / Security | Framework-agnostic authentication for TypeScript apps. |
| text.ai | AI Productivity | AI tool for text-based workflows. |
| Cohesive AI | CRM AI | AI CRM for blue-collar industries. |
| Kanava AI | HR AI | AI for sales hiring in wholesale. |
| Nomi | Sales AI | AI sales copilot. |
| throxy | Sales AI | AI for outbound sales and meeting booking. |
| Lyra | Communication AI | AI-native Zoom alternative for sales teams. |
Summer 2025 (S25) Batch
- Demo Day: Expected early September 2025 (batch ongoing as of August 27, 2025)
- Key Focus: Full-stack AI companies, voice AI, healthcare applications
- Number of Startups: Not yet fully disclosed
- Note: Limited public information; check YC directory post-Demo Day for updates.
| Startup Name | Industry | Short Description |
|---|---|---|
| Verbiflow | CRM AI | AI CRM for lead generation. |
| Kestral | Sales AI | AI agents prioritizing sales work. |
| SixtyFour | Sales Intelligence | Bloomberg-like platform for sales data. |
| AthenaHQ | Marketing AI | AI marketing co-pilot. |
| Lopus AI | Sales Research AI | AI agents for enterprise deal research. |
Fall 2025 (F25) Batch
- Start Date: October 2025 (applications ongoing as of August 27, 2025)
- Key Focus: AI-integrated ideas, vocational training for AI jobs, infrastructure
- Number of Startups: Not yet announced
- Note: No startups disclosed yet; selection in progress. See YC’s “Requests for Startups” for priorities.
