AI Startups

Airtrain AI provides a no-code platform for preparing and evaluating training data to fine-tune open-source language models as alternatives to proprietary AI models. The platform serves AI practitioners seeking to reduce costs and improve reliability when deploying language models in production.

1 investor

Alguna provides quote-to-cash automation software for revenue teams, connecting CRM, billing, contracts, and collections on a single platform. The tool enables pricing experiments, handles revenue recognition compliance, and supports hybrid go-to-market models with real-time data synchronization.

1 investor

AllSome provides fulfillment services for Southeast Asian e-commerce merchants, handling inventory management and order shipment on a pay-as-you-go basis with guaranteed on-time delivery.

1 investor

Almanac is a wiki system that automatically maintains documentation as developers work, reading coding sessions and updating affected pages. It integrates with coding agents and repositories to keep technical documentation current.

1 investor

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

Amika provides a sandbox platform for AI coding agents that can understand codebases, connect to data sources, and autonomously create and validate pull requests. The platform targets software development teams seeking to automate code generation and review workflows.

1 investor

Amulet builds shared storage infrastructure for AI agents to save, retrieve, and collaborate on files. The platform serves as a centralized file system purpose-built for agent-to-agent and agent-to-human workflows.

1 investor

Antigen provides continuous offensive security testing for enterprise production environments using AI agents nightly and human red teams monthly, with findings integrated into engineering tools.

1 investor

Antimattr is building voice-first interfaces focused on memory and voice productivity, positioned as an ecosystem of products for natural human-machine interaction. Its first product, Project Mnemosyne, is scheduled to begin shipping in Q4 2026.

1 investor

Approxima provides AI agents that handle routine software development tasks including scoping work, writing code, validating fixes in isolated environments, and deploying to production, freeing developers to focus on novel work.

1 investor

Aqua Voice is an AI-powered voice-to-text application that converts speech into refined text in real time for use across apps, from coding to writing and team communication. It serves developers, content creators, and professionals seeking faster typing alternatives with accuracy optimized for technical and natural language contexts.

1 investor

Aquarium built AI quality improvement technology for computer vision and natural language processing systems. The company has been acquired by Notion and is winding down its products.

1 investor

This is the personal website of Rohan Mehta, a software engineer at OpenAI who previously founded a YC-backed startup and worked at Meta; it is not a company website. He created Subway Time, an app for the NYC Subway.

1 investor

Archer provides financial infrastructure for data marketplaces and AI labor platforms, enabling instant payments to global contributors using stablecoins and yield on idle balances. The platform serves data providers, AI labor networks, and reinforcement learning environments that supply training data to frontier AI labs.

1 investor

ArchiLabs is a browser-native BIM and design workspace that combines AI-assisted modeling, Python automation, and validation for complex building systems like MEP, modular housing, and critical facilities. The platform enables teams to automate design workflows, generate documentation, and configure products with deterministic results and full audit trails.

1 investor

A platform for creating and sharing mini-apps and games built by community developers, featuring AI-powered features like video generation and image scoring alongside casual gaming experiences.

1 investor

Assemble provides a platform for managing changes across enterprise systems, allowing developers to scope dependencies, modify logic, and validate changes across multiple platforms from a single interface.

1 investor

Astro acquires land and secures grid connections for renewable energy projects, then sells the developed sites to larger energy companies. The company uses machine learning to identify grid connection points that reduce cost overruns in renewable project development.

1 investor

Async deploys specialized AI agents within existing business systems to help organizations adopt and integrate artificial intelligence into their workflows. The company targets businesses seeking to realize concrete returns on AI investment through process redesign and implementation.

1 investor

Atlas provides a contract workflow platform for teams to create, review, and sign agreements collaboratively. The service enables shared billing, role-based access control, and integrations with AI tools like Claude and ChatGPT.

1 investor

Attack Capital is a YC-backed venture builder and AI-focused investment fund that invests in and co-builds early-stage companies using a studio model. The firm targets AI-native businesses across verticals including SaaS, robotics, healthcare, fintech, logistics, and enterprise automation.

1 investor

AtTimeT builds predictive models for financial markets using mathematical approaches to anticipate large-scale market behavior. The company applies advanced intelligence techniques to asset management and financial decision-making.

1 investor

Audun automates debt collection by handling the full cycle of borrower outreach, negotiation, payment plans, and payouts through a software tool. It emphasizes multi-channel, multilingual communication and flexible repayment plans while aiming to preserve the customer relationship.

1 investor

A phone service that automatically dials business and government phone lines on behalf of users to avoid wait times, reducing typical hold durations from around an hour to five minutes. Autodial serves individuals calling financial institutions, utilities, customer service centers, and public agencies.

1 investor