Y Combinator Winter 2025 (W25) Companies

Olive is an AI tool that connects to a company's database or data warehouse, understands the schema, and builds and deploys production-ready business intelligence dashboards and tools from natural-language descriptions. It also provides access controls, role management, and governance for teams working with their data at scale.

1 investor

Onlook builds developer and design tools that bridge the gap between creative teams and implementation, using AI to enhance the creative process.

7 investors

OpenIntake provides AI-powered intake automation for law firms that captures and converts phone inquiries into client matters around the clock.

1 investor

Operand provides private-markets intelligence for private equity firms, supporting commercial due diligence through post-close value creation. It also develops AI research including Operand Quant, a single-agent architecture for autonomous machine learning engineering.

2 investors

Optifye.ai installs cameras on factory floors and uses computer vision to track worker activity, allowing manufacturers to monitor productivity and identify which employees are active or idle in real time.

1 investor

Orbital Ops develops propulsion systems and related aerospace hardware for airborne vehicles. The company draws on deep expertise in turbomachinery and propulsion integration.

10 investors

Osmosis provides reinforcement learning infrastructure that enables AI agents to improve themselves from experience. The platform allows developers to fine-tune models on proprietary data with full ownership, addressing practical challenges in deploying and scaling AI agents across multi-step tasks.

7 investors

Outlit is an AI platform that identifies at-risk customers showing early signs of churn and automates customer retention work. It integrates with a company's existing tools to flag churn risk, explain the underlying causes, and assist customer success teams with win-back outreach.

2 investors

Outship is a recruiting platform that evaluates engineers by observing how they use AI coding tools to complete tasks, analyzing their problem-solving approach and decision-making process alongside the resulting code.

2 investors

Overstand is a data platform that aggregates customer insights from across an organization's dispersed data sources and systems to help leadership teams validate product decisions and align on direction. The product serves product teams and company leadership in enterprise organizations.

4 investors

An AI-assisted recruiting platform connecting London startups with specialist recruiters on a pay-per-hire basis. The service combines human expertise in specific markets with AI sourcing to present pre-screened candidates without upfront fees or retainers.

1 investor

Paragon develops AI software to automate and scale operations for manufacturers and distributors in essential industries. The company serves large enterprises that operate with legacy systems and manual workflows.

1 investor

Paratus builds intent-scored lead lists for companies selling into healthcare providers, using federal data and live web scraping to identify and qualify practices across the US market.

1 investor

Pave Robotics develops automated robotic systems that identify and repair cracks in asphalt pavements for roads and parking lots. The company provides precision crack sealing solutions designed to improve safety and reduce maintenance lifecycle costs for infrastructure operators.

5 investors

PAX builds a patented API for digital asset exchanges that optimizes market efficiency and trade execution speed through custom hardware and low-latency infrastructure. The company serves crypto and digital asset traders and exchanges with exchange technology.

6 investors

Peppr is an AI copilot for sales teams that listens to customer calls in real-time and surfaces relevant answers from a company's knowledge base directly to sales representatives without disrupting the prospect. The platform also coaches calls according to a playbook, scores adherence, and automatically converts call insights into updated knowledge entries and battle cards.

5 investors

Permitify reviews architectural and engineering plans against city ordinances, building codes, and project requirements to identify likely code violations or missing items before official municipal review. The service targets architectural and engineering teams seeking to reduce permitting delays and revision cycles.

1 investor

Pickle builds hardware and software products that track user context and preferences to enable AI assistants to act proactively rather than reactively, including AR glasses and a web-based chat application.

3 investors

Pinch develops AI translation technology that preserves the original speaker's voice and timing across audio and video content. The platform serves creators dubbing videos, teams meeting across languages, and developers building speech products, with offerings including video/podcast dubbing, live meeting translation, and an API for speech translation applications.

1 investor

Praxim is a Word document editor powered by AI agents that automatically applies edits across entire documents while preserving formatting, incorporating file and web context, and respecting user preferences. Users describe desired changes and the system executes them without manual intervention.

1 investor

Proception develops advanced humanoid hands that combine robotics and artificial intelligence to enable dexterous manipulation. The company focuses on solving complex challenges in robotic dexterity and mechanical design.

5 investors

Promptless automatically generates and suggests documentation updates when product changes occur, such as code PRs, Slack threads, or support tickets. It serves software development teams and technical writers who need to keep documentation in sync with product changes.

3 investors

Quantstruct automates software documentation creation and maintenance by integrating with development tools, codebase events, and support channels to generate and update technical documentation. It serves software development teams and organizations that need to keep their documentation current across multiple tools and workflows.

4 investors

Rally offers virtual and physical Visa company expense cards with real-time spending controls, automated receipt capture, and direct accounting integration for managing business expenses across teams. The platform serves businesses in Europe and the UK, supporting fuel and EV charging, multiple card types per employee or department, and integration with 30+ accounting systems.

1 investor