Y Combinator Winter 2023 (W23) Companies

Orchid provides an electronic health record system with AI capabilities for solo and small-group mental health practices, handling administrative tasks and clinical documentation to reduce manual work.

1 investor

Outerbase provides a platform to democratize access to data across organizations, enabling users to query and interact with their data regardless of their role. The company serves teams and individuals who need on-demand access to databases and data infrastructure.

1 investor

OutSail Technologies manufactures autonomous retractable wing sails for vessels that harness wind power, using aerospace engineering to replace conventional fuel-powered propulsion systems.

1 investor

Overlord is an AI accountability partner app for iOS, Android, and Mac that enforces personal goal-setting through real-time monitoring, financial stakes, location tracking, and escalating interventions like voice calls and friend notifications. It helps users maintain habits across fitness, substance abstinence, focus, spending, and wellness through computer vision, geofencing, bank integration, and device-level app blocking.

1 investor

Pair AI offers practical coding competitions to assess software engineering candidates at scale, replacing traditional resume-based and LeetCode-style hiring. The platform targets companies seeking to hire top technical talent globally through performance-based assessments.

4 investors

Palomma provides AI-powered financial services and payment infrastructure for the real estate sector in Latin America, serving tenants, landlords, and property management companies. The platform handles the full rental lifecycle with products including payments, payment protection, advance disbursement, and flexible payment options.

6 investors

Pando develops enzyme design and optimization using machine learning to accelerate the design-build-test-learn cycle for biotechnology applications.

1 investor

Paperplane provides credit risk prediction for building supplies merchants using transaction data and sales representative input to identify customers at risk of default weeks before traditional credit assessment methods.

2 investors

Parabolic provides AI-generated draft responses for customer support agents to review and send to customers. It serves support teams looking to accelerate response composition.

1 investor

Peeba operates a B2B wholesale marketplace connecting independent retailers across Southeast Asia with branded product suppliers, handling inventory purchases.

3 investors

Persana is a go-to-market platform that combines 100+ intent data sources, AI agents, and automation to help sales teams identify prospects, enrich lead lists, and personalize outreach at scale. The platform serves B2B sales and marketing teams seeking to automate prospecting, lead generation, and email sequencing workflows.

1 investor

Persist AI provides AI-driven formulation development services for pharmaceutical compounds, combining robotic lab automation with machine learning models to accelerate drug formulation optimization and reduce time-to-market.

6 investors

Pier builds financial access tools for innovators and entrepreneurs. The company focuses on customer-centric product development and support services.

3 investors

Pierre Computer Company develops developer tools including code storage, diff rendering, and code visualization software.

3 investors

Pigeon provides software that automates the end-to-end handling of documents—from collection through clients to data extraction via machine learning and integration with CRM and storage platforms.

1 investor

Pirros provides a centralized platform that helps architecture and engineering design firms manage and retrieve project details through searchable access to their past work, reducing time spent on detail development and retrieval.

2 investors

PlayAI builds voice AI models that can replicate any voice or accent and produce speech in real-time for conversational applications.

1 investor

Pledge Health provides an AI assistant that automates insurance verification, prior authorization submissions, and claim status checks across payer portals, integrating directly with clinical EHR systems to help medical administrative teams complete these tasks faster.

1 investor

1 investor

PoloTab is a point-of-sale system designed for restaurants and cafés in Mexico, offering inventory management, integration with delivery platforms like UberEats, Rappi and DiDi, and real-time transaction processing.

1 investor

PoplarML provides tooling to deploy machine learning models to GPU infrastructure and expose them as scalable API endpoints with minimal configuration.

1 investor

1 investor

Proglix is a B2B digital procurement platform for metal and steel raw materials in Indonesia that connects suppliers and buyers globally. The platform offers price quotes, inventory liquidation, logistics, customization, and financing solutions for SMEs and large enterprises in metal manufacturing.

3 investors

Propexo builds data infrastructure for multifamily real estate, connecting property management systems and proptech tools through a centralized data warehouse and unified API. The platform serves real estate operators and developers who need to consolidate and access fragmented property data across multiple systems.

2 investors