Discover the next generation of startups.

Aster

YCombinator

Automating open-ended research.

Aster is the first autonomous research lab — thousands of AI research agents orchestrated in parallel toward a single goal. We're on a mission to automate open-ended research: research that defines its own problems before it can answer them. The future doesn't wait to be defined by benchmarks. Neither do we.

Atlas Discovery

YCombinator

Discovering the atlas of disease biology using virtual cells.

Atlas Discovery is an innovative startup in the tech space.

AtlasGrid

YCombinator

Accelerate Product Iteration

AtlasGrid automatically builds a visual graph of your mobile app UI and displays analytics directly on your screens. Additionally, our fleet of AI-powered agents will continuously analyze thousands of mobile apps, gathering design insights and identifying growth opportunities + actionable product improvements.

Atrisa

YCombinator

AI Agents for Analog Circuit Design

AI Agents to build, debug and automate analog circuit design

Aurorin CAD

YCombinator

Claude code for Mechanical Engineers

There are 2 problems: The first, CAD software is slow and the second, designing with it is a tedious process with many steps. Aurorin solves both of these problems by being a CAD software built from the ground up on a modern tech stack with AI at its heart. Building the CAD kernel lets us fully leverage AI while modernizing execution speed. Almost all existing CAD software (Solidworks, NX, Creo, Catia, Fusion 360, Onshape etc) use the same couple of underlying CAD kernels built in the 80's. It's common for these programs to take 4 hours to open a file. Aurorin uses a custom parametric and B-Rep driven CAD Kernel built to take full advantage of modern CPUs and GPUs and be AI native.

Autosana

YCombinator

AI agents for E2E testing across mobile & web

Autosana is the end-to-end testing layer for your coding agents, across iOS, Android, and Web apps. Step away from your laptop. Come back to full-stack features built and tested end-to-end, production ready. Autosana creates, updates, and runs tests automatically from your code diffs. Locally, it loops with your coding agent until every test passes. In PRs, it loops with cloud agents and shows video proof of your new feature or bug fix working end-to-end. No setup, no maintenance, just tests evolving with your codebase. Ship with confidence.

AutoSitu

YCombinator

AI-native workspace for development plan reviews

At AutoSitu, we’re building coordinated AI agents that live inside cities’ cross-department development review workflows—doing the heavy lifting, escalating judgment calls, and letting staff focus where human expertise actually matters. AutoSitu provides expert-level guidance and catch issues in minutes, helping cities and design firms/developers navigate an increasingly complex and fragmented regulatory environment. We serve as a strategic partner to forward-thinking public agencies and design teams across the country and are backed by Y Combinator (W26).

Autumn AI

YCombinator

Stalk your prospects at scale.

Autumn is building the first real-time signal intelligence platform for GTM teams. We monitor posts, commits, blogs, and announcements, surfacing buying signals the moment they appear. Define your ICP and the signals that matter, and we deliver a condensed, real-time feed filtered by intents.

Auxos

YCombinator

Simulations of real people for market research

Auxos builds AI customer twins for marketing, product, and research teams to test their hypotheses at scale. We work with companies to create 1:1 replicas of their customers by sourcing and interviewing real people in their ICP, allowing us to accurately model how they behave and make decisions. Currently, market research is too slow and expensive to use on anything but the biggest decisions. Surveys and panels cost a fortune and it takes weeks to recruit, moderate, and gather insights. Auxos provides a 24/7 available customer panel that can give population-scale insights in minutes. The day-to-day decisions surrounding product, pricing, and positioning can now be validated with the same rigor that used to be reserved for the big ones.