204 companies worth knowing

Makes NEO, a humanoid robot designed to help people with everyday tasks around the home.

San Carlos, CA · Series B · ~$126M raised · ~1,000+ people

Open-source context-retrieval layer that lets AI agents search and use data from many sources.

San Francisco, CA · YC P25 · ~7 people

Provides hosted search and discovery APIs that power the fast search bars inside many apps and websites.

San Francisco, CA · Series D · $150M @ ~$2.3B (2021) · ~$100M ARR

A self-clearing broker-dealer offering stock and crypto trading as an API that other apps can build on.

San Mateo, CA · YC W19 · Series D · $320M+ raised

AI research lab behind the Claude family of AI models, assistants, and developer tools.

San Francisco, CA · Series H · ~$183B valuation

Anyscale Jobs

San Francisco, CA · ~$281M raised · ~$1B valuation

Makes software and simulation tools that help car, truck, and defense companies develop and test autonomous vehicles.

Sunnyvale, CA · Series F (2025) · $15B valuation

Builds an operating system for running and managing data centers.

San Francisco, CA · YC P25

Develops passive, scalable systems that track drones and missiles without using radar.

San Francisco, CA · YC P26 · ~3 people

Builds AI "employee" software for sales teams — its flagship agent, Ava, automates outbound sales outreach.

San Francisco, CA · YC W24 · $25M Series A (~$46M total) · ~37 people

A platform that helps companies deploy and run their AI models in the cloud quickly and reliably.

San Francisco, CA · Series E · ~$5B valuation

Makes evaluation and observability tools that help teams measure, test, and improve their AI products and agents.

San Francisco, CA · Series B ($80M, 2026)

Maintains the leading open-source project for AI agents that browse and operate the web, earning 50k GitHub stars in three months.

San Francisco, CA · YC W25 · ~7 people

Runs headless web browsers in the cloud so AI agents and apps can browse and interact with websites programmatically; maintains the open-source Stagehand framework.

San Francisco, CA · Series B ($40M, 2025) · ~$300M valuation

Automates medical billing and revenue-cycle work for healthcare providers.

San Francisco, CA · YC W20

Develops continual-learning technology so AI agents keep improving over time.

San Francisco, CA · YC F24 · ~3 people

Builds fast, real-time voice AI powered by state-space models, a new alternative to transformer models.

San Francisco, CA · Series B · ~$191M raised

Autonomous security testing for web, API, cloud, and AI systems.

YC P25 · ~10 people

Builds wafer-scale AI chips — the largest computer chips ever made — and a cloud service for very fast AI inference.

Sunnyvale, CA · Public — NASDAQ: CBRS

Runs an AI-driven background-check platform that companies like DoorDash and Lyft use to screen new hires quickly.

San Francisco, CA · YC S14 · ~$5B valuation · ~$800M ARR

Open-source AI coding agent that works inside the editor, with millions of installs and a large open-source community.

San Francisco, CA · Series A · $32M raised · ~$110M valuation

Maker of Devin, an autonomous AI software engineer, and the Windsurf AI-powered coding editor.

San Francisco, CA · $1B+ raised (2026) · ~$26B valuation

Lets developers run a whole team of AI coding agents on their Mac.

San Francisco, CA · YC S24 · ~6 people

Evaluation and observability platform for testing large language model applications, makers of the DeepEval framework.

San Francisco, CA · YC W25 · ~7 people

Open-source AI coding assistant that plugs into developers' editors and IDEs.

San Francisco, CA · YC-backed seed · small team (~9 people)

AI that autonomously finds and fixes insecure code and vulnerable packages.

San Francisco, CA · YC S23 · ~6 people

Makes AI agents and real-time coaching software for customer-service contact centers.

San Francisco, CA · Series D — $125M · ~$270M raised

Builds and operates large AI data centers and a GPU cloud where companies train and run AI models.

San Francisco, CA · Series E · $10B+ valuation

Designs chips that compute inside memory to run AI inference more efficiently in data centers.

Santa Clara, CA · Series C · ~$2B valuation

Builds AI customer-support agents that companies deploy to handle their customer conversations end to end.

San Francisco, CA · Series D ($250M, 2026) · $4.5B valuation

Makes frontier AI models run directly on any device through efficient edge inference.

San Francisco, CA · YC S25 · ~3 people

Builds intelligent robotic arms that pick, pack, and move goods inside warehouses.

Redwood City, CA · ~$1.65B valuation · ~$307M raised

Open-source Rust framework for building web, desktop, and mobile apps from a single codebase.

San Francisco, CA · YC S23 · ~4 people

AI that finds and resolves engineering and operations issues in data centers.

San Francisco, CA · YC S24 · ~11 people

Developing Sohu, a computer chip built exclusively for transformer AI models to make inference much faster.

San Jose, CA · Series A · $120M raised

Makes "Droids" — AI software-development agents that write and maintain code for enterprise engineering teams.

San Francisco, CA · Series C ($150M, 2026) · $1.5B valuation

A cloud platform for running generative media AI — image, video, and audio models — at high speed.

San Francisco, CA · Series D · ~$4.5B valuation

Makes AI-powered software for audit and advisory firms to run their engagements.

San Francisco, CA · YC S20

Builds general-purpose humanoid robots powered by its Helix AI foundation model.

San Jose, CA · Series C (2025) · ~$39B valuation

Runs open-source AI models as a fast cloud service so companies can use AI without managing their own GPUs.

San Mateo, CA · Series C · $4B valuation

Makes a high-performance engine for serving AI models, helping companies run them faster and cheaper.

Redwood City, CA · ~$26M raised

AI teammates that handle insurance workflows like underwriting and claims paperwork.

San Francisco, CA · YC W24 · $5M seed

Robotics AI company building GEN-1, an embodied foundation model that teaches robots general physical skills.

San Mateo, CA · Series B (2026) · ~$2B valuation

Enterprise AI search and assistant that helps employees find and use knowledge across all their company's apps, with agents built on top.

Palo Alto, CA · Series F ($150M, 2025) · $7.2B valuation

Makes the LPU, a chip designed for lightning-fast AI responses, and sells access through its GroqCloud service.

Mountain View, CA · Series E · $6.9B valuation

No-code platform for building AI-powered automations and agent workflows without writing code.

San Francisco, CA · Series A ($17M, 2025) · YC W24

Builds data and reinforcement-learning environments aimed at automating knowledge work.

San Francisco, CA · YC S25 · ~5 people

Builds AI assistants and agents that help law firms and legal teams draft, research, and analyze documents.

San Francisco, CA · $200M round at $11B valuation · ~$190M ARR

Runs AI-agent-driven offensive security testing (red teaming) at scale.

San Francisco, CA · YC W26 · ~7 people

Makes developer tools that help engineering teams use AI coding agents on production codebases.

San Francisco, CA · YC F24 · ~2 people

A B2B payment processor that lets businesses send and receive payments using stablecoins.

San Francisco, CA · YC W25 · seed · ~4 people

Open-source platform for managing secrets, credentials, and privileged access across engineering teams.

San Francisco, CA · YC W23

Builds production AI agents for mortgage lenders, turning messy lending workflows into automated software.

San Francisco, CA · YC S24

Develops self-driving technology for long-haul trucking, with an expanding push into defense autonomy.

Mountain View, CA · Public — NASDAQ: KDK

GPU cloud company offering on-demand compute and clusters for training and running AI models.

San Jose, CA · Series E ($1.5B+) · ~$5.9B valuation

Builds popular open-source frameworks for creating AI applications and agents, plus LangSmith, a platform for testing and monitoring them.

San Francisco, CA · Series B ($125M, 2025) · ~$1.25B valuation

Builds a memory framework that lets AI agents remember and learn over time, spun out of UC Berkeley research (originally MemGPT).

San Francisco, CA · Seed · $10M · ~16–19 people

Open-source AI gateway routing hundreds of millions of LLM calls a day, used by companies like Netflix, Stripe, and Nvidia.

San Francisco, CA · YC W23 · ~$7M ARR

Makes real-time finance and accounting software that keeps company books and reports up to date.

San Francisco, CA · YC W21

AI lab behind the Dream Machine video-generation model, building large-scale GPU infrastructure for multimodal AI.

Palo Alto, CA · Series C — $900M at ~$4B valuation

A machine-learning compiler that automatically generates fast GPU code for AI models.

San Francisco, CA · YC S25

AI research company building frontier code-generation models with extremely long context windows.

San Francisco, CA · $320M raised (2024) · ~$1.5B target valuation

Open-source SDK plus cloud infrastructure for building MCP servers and ChatGPT apps.

San Francisco, CA · YC S25 · ~5 people

AI agent for bill-pay platforms that pays invoices using virtual cards.

San Francisco, CA · YC W23 · ~2 people

Runs an AI-powered talent marketplace that connects domain experts with AI labs for model training and evaluation work.

San Francisco, CA · Series C — $350M at ~$10B valuation

Builds the Mojo programming language and MAX platform to make AI software faster and less tied to Nvidia's CUDA.

Los Altos, CA · Series C · $1.6B valuation

Space infrastructure company offering in-orbit transportation and services to move satellites where they need to go.

San Jose, CA · Public — NASDAQ: MNTS

Builds "Agent Infrastructure as Code" — infrastructure tooling for deploying and running AI agents.

San Francisco, CA · YC P25 · ~8 people

Builds a shared context layer that connects individuals, teams, and AI agents.

San Francisco, CA · YC F25 · ~2 people

Biotech company working to extend human healthspan by epigenetically reprogramming cells to make them young again.

South San Francisco, CA · Series C · $435M @ ~$3.1B valuation (~$610M raised)

A product lab building tools that solve context management for AI systems.

San Francisco, CA · YC S25 · ~5 people

Autonomous driving company that licenses its Nuro Driver self-driving system to vehicle makers.

Mountain View, CA · Series E (2025) · ~$6B valuation

Develops compact advanced nuclear fission reactors to deliver clean, reliable power, including for data centers.

Santa Clara, CA · Public — NYSE: OKLO

Open-source AI chat platform for teams and enterprises.

San Francisco, CA · YC W24 · ~20 people

AI research lab behind ChatGPT and the GPT models, building AI assistants, coding agents, and developer platforms.

San Francisco, CA · ~$852B valuation

Builds an open-source platform for agent-powered work and productivity.

San Francisco, CA · YC P26 · ~4 people

Reinforcement-learning platform for training and improving AI agents.

San Francisco, CA · YC W25 · ~6 people

An open-source alternative to Elasticsearch, built as a Rust extension that adds search and analytics to Postgres.

San Francisco, CA · YC S23

Building a high-speed cryptocurrency exchange with its own in-house trading technology.

Redwood City, CA · YC W25

AI-powered answer engine that blends search with conversational AI to answer questions with cited sources.

San Francisco, CA · ~$22.6B valuation · ~$1.7B raised

Makes a popular crypto wallet app for storing, buying, and trading digital assets across multiple blockchains.

San Francisco, CA · Series C ($150M) · ~$3B valuation

Develops foundation models that give robots general-purpose physical skills across many different tasks.

San Francisco, CA · Small team (~12 people)

General-purpose autonomy software for industrial vehicles.

San Francisco, CA · YC S22 · ~13 people

Builds infrastructure for distributed AI training, letting researchers pool compute to train models and run reinforcement learning.

San Francisco, CA · ~$70M raised · small team

Lets developers run any coding-agent harness in the cloud.

San Francisco, CA · YC P26 · ~2 people

Online coding platform where anyone can write, run, and ship software, now centered on an AI agent that builds apps from plain-English prompts.

Foster City, CA · ~$400M round (2026) · ~$9B valuation

Real-time AI voice agents that answer and handle phone calls for businesses.

San Carlos, CA · YC W24 · $36M ARR

Builds quantum computers — designing and fabricating superconducting quantum processors and offering access to them over the cloud.

Berkeley, CA · Public — NASDAQ: RGTI

Prime brokerage and trade execution for prediction markets like Kalshi and Polymarket, with proprietary execution algorithms.

San Francisco, CA · YC P26 · ~2 people

Runs coding AI agents inside secure sandboxes with observability and guardrails.

San Francisco, CA · YC P26

Builds AI chips and complete computer systems that companies use to run large AI models.

Palo Alto, CA · ~$350M round (2026) · ~$2.2B valuation

Makes AI software that helps robotics and hardware companies meet safety and compliance requirements.

San Francisco, CA · YC S24 · ~8 people

Provides the data labeling and evaluation infrastructure used to train AI models, plus generative-AI platforms for enterprises and governments.

San Francisco, CA · ~$29B valuation (Meta acquired ~49% stake, 2025)

Develops Fury, a robotic foundation model that lets military ground, air, and sea vehicles understand commands and act autonomously.

Sunnyvale, CA · Series A · $100M

A marketplace where companies buy and sell GPU computing power, traded like an exchange order book.

San Francisco, CA · Series A · ~$300M valuation · ~54 people

Runs a marketplace where local home cooks sell homemade meals to people nearby.

San Francisco, CA · YC W19

A retail company that personalizes apparel shopping and clothing fit.

San Francisco, CA · YC S19

Builds conversational AI agents that handle customer service for large enterprises, co-founded by Bret Taylor and Clay Bavor.

San Francisco, CA · Series E ($950M, 2026) · ~$15.8B valuation

Infrastructure for running video processing and AI model pipelines at large scale.

San Francisco, CA · YC W22

Open-source platform for building AI agent workflows.

San Francisco, CA · YC P25 · ~6 people

The largest US drone maker — self-flying drones used for public safety, defense, and infrastructure inspection (60K+ shipped).

San Mateo, CA · Series F · $110M @ $4.4B valuation (~$672M raised)

Business banking platform serving around 5,000 companies and moving tens of billions of dollars a year across payment rails.

San Francisco, CA · YC S21 · ~70 people

AI agents that investigate fraud and risk cases for financial companies in real time.

CA · YC S25

Open-source code search and understanding for massive codebases, built for both humans and AI agents.

San Francisco, CA · YC F25

Runs a publishing platform where writers publish newsletters and readers subscribe to them directly.

San Francisco, CA · YC W18

AI coding assistant built for JetBrains IDEs.

San Francisco, CA · YC S23 · ~4 people

Low-cost securities-backed lending for financial advisors and high-net-worth clients.

San Francisco, CA · YC S23 · ~15 people

Builds AI agents that autonomously run knowledge work around the clock.

San Francisco, CA · YC P26

Program-verification tools that mathematically check software for correctness.

San Francisco, CA · YC P25 · ~4 people

AI research lab founded by former OpenAI CTO Mira Murati; its first product, Tinker, is an API for fine-tuning AI models.

San Francisco, CA · Seed — $2B at $12B valuation · ~90 people

GPU virtualization — often described as VMware for GPUs — letting more AI workloads share the same graphics hardware.

San Francisco, CA · YC S24 · $4.5M raised

Cloud platform for running, fine-tuning, and serving open-source AI models on large GPU infrastructure.

San Francisco, CA · Series B ($305M) · $3.3B valuation

Open-source self-healing observability layer that monitors and fixes AI agents.

San Francisco, CA · YC S25 · 1 person

AI agent for fraud prevention and underwriting.

San Francisco, CA · YC S22 · ~28 people

A multimodal document-parsing API that turns messy PDFs and files into clean data for AI agents.

San Francisco, CA · YC F25

Popular open-source software that makes training and fine-tuning AI models much faster, with millions of monthly downloads.

San Francisco, CA · YC S24

Builds AI-powered software and intelligence tools for national-security missions, including agent platforms for defense analysts.

Palo Alto, CA · Series B · $75M @ ~$575M valuation (~$91.5M raised)

AI foundation models that teach robots new skills in hours instead of months.

San Francisco, CA · YC S25 · ~6 people

Reimagines the terminal as a fast, modern, AI-powered command center for developers, including cloud-based coding agents.

San Francisco, CA · Series B · $73M raised

Alphabet's self-driving company, operating driverless robotaxi services in cities like San Francisco, Phoenix, LA, and Austin.

Mountain View, CA · Alphabet subsidiary · ~2,500 people

Automated investing and banking service that helps people grow and manage their money without a traditional advisor.

Palo Alto, CA

AI research company co-founded by Fei-Fei Li building Marble, software that generates interactive 3D worlds.

San Francisco, CA · ~$5B valuation · ~$1.23B raised

Makes a plugin for Claude Code that cuts AI token usage and cost roughly in half.

San Francisco, CA · YC W25 · ~8 people

Enterprise generative-AI platform that companies use to build AI apps, agents, and writing workflows on Writer's own models.

San Francisco, CA · Series C ($200M, 2024) · $1.9B valuation

Builds the Grok AI assistant and trains frontier models on Colossus, one of the world's largest GPU supercomputer clusters.

Palo Alto, CA · Series E — $20B at ~$230-250B valuation

Builds memory infrastructure that helps AI agents keep and use context over time.

San Francisco, CA · YC W24 · ~5 people

Builds specialized retrieval and search infrastructure for AI applications.

San Francisco, CA · YC W25 · ~6 people

Designs energy-efficient computer chips for AI workloads.

San Francisco, CA · YC S24 · ~4 people

Amazon-owned robotaxi company building a purpose-designed autonomous vehicle and the full self-driving stack behind it.

Foster City, CA · Amazon subsidiary (acquired 2020)

Builds autonomous defense systems — drones, sensors, and the Lattice command-and-control software.

Costa Mesa, CA · Series H · ~$61B valuation

Asteroid-mining startup building autonomous deep-space spacecraft to prospect and extract metals from asteroids.

Seal Beach, CA · YC W22 · $40M Series A · ~45 people

Develops mass-produced hypersonic strike missiles (Blackbeard), aiming to make hypersonic weapons affordable for national defense.

Torrance, CA · Series B · $350M (~$450M total)

Builds advanced radar and counter-drone detection systems, plus the command-and-control software that ties them together for the military.

Hawthorne, CA · $510M round · ~$4.5B valuation (>$1B raised)

Runs a logistics marketplace that delivers construction materials and supplies on demand.

Ventura, CA · YC S19

Builds "physics-first" foundation models that let robots navigate and work autonomously in complex, GPS-denied environments.

Mission Viejo, CA · $400M+ raised · $2B valuation

Runs highly automated factories that machine precision parts for aerospace and defense, powered by its own factory software.

Torrance, CA · Series C · $260M

Builds stratospheric aircraft for intelligence, surveillance, and reconnaissance, plus the telemetry and command software behind them.

El Segundo, CA · YC F25

Builds in-space transportation vehicles — the Mira orbital transfer vehicle and Helios kick stage — to move satellites between orbits.

Redondo Beach, CA · Series D · $500M (Jun 2026) · ~$4.26B valuation

Builds large, high-power "mega class" satellite buses for commercial and government space missions.

Torrance, CA · Series C · $250M at ~$3B valuation

Designs and manufactures hardware systems and components for space and defense programs.

Huntington Beach, CA · Public — NYSE: KRMN

Develops military vehicles, propulsion, and energetics — new kinds of drones and weapons systems for the US Army.

Huntington Beach, CA · Series C · $300M @ $1.8B valuation

Combines robotic arms and AI to shape sheet metal into finished parts on demand, serving aerospace and defense manufacturing.

Chatsworth, CA · Series C (Feb 2026) · ~$223M raised

Autonomous AI red-team agents that find, exploit, and patch security vulnerabilities in software.

Los Angeles, CA · YC X25

Builds robotic arms and space robotics for satellites and in-orbit servicing; now Rocket Lab's space-robotics arm.

Pasadena, CA · Acquired by Rocket Lab (NASDAQ: RKLB), May 2026

Builds networks of software-defined phased-array ground stations — the antennas and software that connect satellites to Earth.

Torrance, CA · Series A · $30M (2025)

An embedded integration platform that lets software products connect natively to their customers' other apps.

Los Angeles, CA · YC W20 · Series A · ~48 people

Builds an open integration layer that connects military radars, cameras, and drones into unified command-and-control systems.

El Segundo, CA · Series A · $45M

A marketplace and pricing platform for rare coins — like a Bloomberg Terminal for collectible coins — handling tens of millions in monthly volume.

Los Angeles, CA · YC S23

Rocket company known for using large-scale 3D printing to build its launch vehicles.

Long Beach, CA

Space company that builds and launches rockets and spacecraft, from small-satellite launches to complete satellite systems and components.

Long Beach, CA · Public — NASDAQ: RKLB

A crypto prime dealer offering institutional trade execution, custody, and algorithmic order routing.

Los Angeles, CA · YC S14

Makes a telemetry and observability platform that helps aerospace and hardware companies monitor and debug their machines.

Marina Del Rey, CA · Series A · $17.5M (~$25M total)

Builds robots that automate manufacturing for the cannabis industry.

Los Angeles, CA · YC-backed

Designs, builds, and launches rockets and spacecraft, including the Falcon and Starship vehicles and the Starlink satellite internet network.

Hawthorne, CA

Developing the Meridian broadband satellite constellation alongside its original kinetic (spin-accelerated) launch system.

Long Beach, CA · ~$203M raised

Builds autonomous surface vessels — self-driving boats — for national-security missions.

El Segundo, CA · YC W25 · ~9 people

Crypto infrastructure for account abstraction (ERC-4337) — tools that make blockchain wallets easier to build and use.

Los Angeles, CA · YC S22

Early-stage company building robotic systems for lunar propellant production and space-based solar power.

Hawthorne, CA · Seed · ~$12M raised (founded 2022)

Nonprofit research center that provides independent technical expertise to the U.S. government on space and national-security programs.

El Segundo, CA · Nonprofit FFRDC · ~4,600 staff · ~$1.4B revenue

Space domain awareness company building spacecraft and software to track objects in orbit.

Irvine, CA · YC S21

Manufactures pharmaceuticals in orbit and brings them back to Earth in reentry capsules, with multiple reentries already flown.

El Segundo, CA · Series C · $187M (Jul 2025) · ~$329M raised

Building commercial space stations — its first, Haven-1, is designed to host astronauts in orbit.

Long Beach, CA · ~$1B raised incl. $500M Series A

Works on space-based missile defense, building real-time GPU-powered sensing and perception systems.

El Segundo, CA · YC F25

A live-shopping marketplace where sellers auction collectibles and goods over livestream, processing thousands of transactions per second.

Marina del Rey, CA · YC W20 · unicorn

Builds openpilot, an open-source driver-assistance system that adds semi-autonomous driving features to everyday cars.

San Diego, CA

Healthcare software that helps autism-therapy (ABA) providers run their practices.

San Diego, CA · YC W23 · ~$3.2M seed

Makes modular drones (Tempest) and portable manufacturing systems so militaries can build aircraft close to where they're needed.

San Diego, CA · Series A · $47M

Builds AI pilot software and autonomous aircraft for defense, including work on the Air Force's collaborative combat aircraft program.

San Diego, CA · Series G · $1.5B @ $12.7B valuation

Builds off-road self-driving software (OverDrive) and the ULTRA ground vehicle so military trucks can navigate rough terrain without drivers.

Seattle, WA · Series B · $100M (equity + debt)

Builds data-integration and AI platforms used by governments and large companies to analyze data and run operations.

Denver, CO · Public — NASDAQ: PLTR

Builds spacecraft and the Mosaic software platform for space security and defense missions.

Denver, CO · Series D · ~$650M at $2.2B valuation

Makes Bullfrog, an AI-powered autonomous gun turret that detects and shoots down hostile drones.

Austin, TX · Series B · $200M @ $2.2B valuation

Builds autonomous unmanned boats — sea drones for the Navy and maritime defense.

Austin, TX · Series D · $1.75B @ $9.25B valuation

Designs AI processors and an open, RISC-V-based software stack, led by chip architect Jim Keller.

Austin, TX · Series D · ~$2.7B valuation

Makes software that helps shippers track containers and manage port logistics and fees.

New York, NY · YC S19

Makes an app that coaches people on English pronunciation and accent.

New York, NY · YC S21

Makes finance and revenue-operations software for consumer packaged goods brands.

New York, NY · YC S21

GPU cloud provider that supplies large-scale computing power for AI training and inference.

Livingston, NJ · Public — NASDAQ: CRWV · ~$60B market cap

Builds payments infrastructure that lets online stores accept EBT/SNAP benefits at checkout.

New York, NY · YC-backed

The open-source hub where the AI community shares and runs models, datasets, and apps.

New York, NY · Series D · $4.5B valuation

Creators of PyTorch Lightning; offers a development platform and GPU cloud for building and training AI models.

New York, NY · ~$2.5B valuation (post-Voltage Park merger)

Builds APIs that let apps connect to consumer financial data and manage debt repayment.

New York, NY · YC-backed

A serverless cloud platform that lets developers run code and AI workloads instantly without managing servers.

New York, NY · Series C · $4.65B valuation

Operates an electronic trading venue — a "smart market" where institutional investors execute trades.

New York, NY · YC S16

Makes a vector database — specialized storage that lets AI applications search and retrieve information by meaning.

New York, NY · Series B · ~$750M valuation

AI lab founded by ex-DeepMind researchers building Asimov, an AI agent that reads and understands large codebases.

New York, NY · Series B — $2B at $8B valuation

AI research company building video-generation models and creative tools for filmmakers and artists.

New York, NY · Series E — $315M at $5.3B valuation

Applies AI to clinical-trial workflows, helping match patients and speed up trial operations.

New York, NY · YC W21

Builds AI that analyzes and improves call-center conversations.

New York, NY · YC W17

AI music generation company — its app turns simple text prompts into complete songs with vocals and instruments.

Cambridge, MA · Series C · $250M @ $2.45B valuation

Makes communication and AI tools that help small businesses message customers and win business.

Lehi, UT · YC W16

A serverless GPU cloud that lets developers rent graphics chips on demand to run AI workloads.

Moorestown, NJ · Seed · ~$22M raised

Builds a general-purpose robot foundation model — an AI brain that can control many kinds of robots.

Pittsburgh, PA · ~39 people

Builds AI-first automation software for accounting firms.

Chandler, AZ · YC-backed

AI lab building large language models and an agent platform (North) aimed at enterprise and secure deployments.

Toronto · $500M round (2025) · ~$7B valuation

Makes the GitLab DevOps platform — one application for planning, coding, testing, and shipping software, with built-in AI features.

Public — NASDAQ: GTLB

Provides on-demand services like rides and deliveries for older adults.

YC-backed

Helps nonprofits discover, track, and manage grants in one place.

YC S16

Runs a platform that helps companies source custom manufactured parts and hardware.

YC W21

A public AI-cloud company building large GPU data centers where customers train and run AI models.

Public — NASDAQ: NBIS

Modern fundraising software for political campaigns and nonprofits.

YC-backed

Makes SMS marketing software that helps e-commerce brands text and sell to their customers.

YC W19

Code search and intelligence platform that helps developers understand large codebases, plus tools that let AI agents work with code.

Series D ($125M, 2021) · $2.6B valuation

Develops the Wasmer WebAssembly runtime, letting the same code run fast and safely anywhere.

YC-backed