Y Combinator Spring 2025 (X25) Companies

Acolite provides insurance brokerage services for construction contractors, shopping quotes across multiple carriers and offering rapid certificate of insurance issuance and direct customer service.

1 investor

Adentris builds AI agents that automate healthcare revenue cycle management, specifically addressing unpaid claims and billing denials for mid-market healthcare providers. The platform reads patient charts and claims in real time to recover revenue that leaks through the billing process.

2 investors

Aegis provides a platform to healthcare providers and hospitals that automates insurance denial appeals and resubmissions to recover lost revenue. The system prioritizes denials by financial impact and overturn likelihood, and integrates with major EHRs and insurance providers.

2 investors

Airweave is a context retrieval layer that connects AI agents and RAG systems to apps, tools, and databases, enabling them to retrieve accurate, real-time information through a unified search interface. It allows developers to integrate multiple data sources with prebuilt connectors and query them in natural language.

3 investors

Alkali provides AI-powered takeoff and estimation software for structural steel projects, automatically detecting and quantifying steel members, calculating tonnage, and generating nesting plans. The platform serves structural steel fabricators and estimators, integrating with tools like Tekla and Bluebeam.

2 investors

Almond manufactures Axol, a dual-arm robot designed for physical AI applications in real-world industrial and construction work. The robot is assembled in San Francisco and available for customer deployment.

1 investor

Alpha Research develops open source knowledge bases that employ AI agents to search and analyze large document collections, helping users locate evidence and test hypotheses faster. The company has launched an initial platform with Project Gutenberg's 75,000 books and plans to expand across datasets in economics, law, and other domains.

1 investor

Anana builds a workspace platform that consolidates revenue, sales, marketing, and operations data for hotel groups, using AI to extract insights from guest conversations and help hospitality teams focus on guest service rather than administrative work.

1 investor

Aravolta provides branch circuit monitoring for data centers, tracking power consumption at sub-second accuracy to enable colocation operators to automate tenant billing, detect power overages, and generate usage-based invoices.

3 investors

ATlog provides AI agents that automate calls and customer interactions while maintaining regulatory compliance (TCPA, FDCPA). The platform serves businesses in collections, reception, and customer service operations.

1 investor

Attune provides software supply chain security by enabling traceability of code back to its author, device, and keystroke to prevent CI/CD pipeline attacks and secure the build process.

2 investors

Atum Works develops scalable 3D lithography technology capable of printing metal structures with submicron resolution for advanced manufacturing applications.

4 investors

Auctor is an AI-native platform for managing the full software implementation lifecycle, designed for services teams and system integrators to deliver projects faster and more consistently. The platform captures context, automates deliverable creation, and improves collaboration across pre-sales, delivery, and post-delivery phases.

3 investors

Avallon provides a conversational AI platform that automates claims operations tasks for insurance carriers, MGAs, and TPAs, integrating with existing workflows to streamline claim intake, subrogation, dispute resolution, and after-hours processing.

2 investors

Aviro builds training environments and simulated spaces for long-horizon agents and frontier AI models to learn complex navigation and tool use.

2 investors

Beluga provides tools for measuring and executing creator marketing campaigns with automation similar to paid advertising platforms. The company serves brands and marketers in the creator economy.

1 investor

BeSimple collects, licenses, and annotates high-quality conversational audio datasets across 15+ languages for training and evaluating audio and multi-modal AI models. The company serves AI teams building speech recognition, voice, and conversational AI applications.

2 investors

Better Auth is an open-source authentication framework for TypeScript applications that provides composable, plugin-based authentication with support for multiple methods including credential auth, social sign-on, passkeys, and enterprise features. It serves developers building consumer and enterprise applications across various frameworks including Next.js, Nuxt, and SvelteKit.

7 investors

BitBoard enables users to generate dashboards and analyses from AI chat tools and coding agents, storing queries, code, and connections as persistent assets that can be shared and rerun with consistent logic. It integrates with data sources for live connections or data pushed from agents.

2 investors

BitPatrol provides real-time secret detection and credential scanning for developer codebases using machine learning. The platform integrates into CI/CD pipelines to identify and alert on exposed secrets, tokens, and keys for software development teams.

1 investor

Blaxel provides cloud infrastructure for autonomous agents, offering persistent sandboxes that boot in milliseconds and can stay idle indefinitely without cold-start penalties. The platform combines compute, storage, and networking primitives designed for AI agents to run, scale, and operate reliably with stateful execution and multi-agent collaboration.

3 investors

Bloom is a no-code platform for designing, building, and sharing native mobile applications directly from an Android device without requiring programming knowledge.

1 investor

Bluejay develops tools for improving the reliability of generative AI systems in production environments. The company is focused on ensuring trust and dependability in real-world AI deployments.

4 investors

Blueshoe is a law firm that uses AI and technology to make legal services more accessible and affordable by enabling attorneys to operate at scale and efficiency. It serves individuals and businesses seeking trustworthy, technology-enabled legal help across general practice areas.

1 investor