RankStartupWhat they’re buildingRating
01Long Lake

An AI holding company transforming service businesses.

An AI holding company transforming service businesses.1,364
02Cognition

AI software engineers that plan, write, and test code.

AI software engineers that plan, write, and test code.1,323
03Prime Intellect

Compute, training, and inference for open AI models.

Compute, training, and inference for open AI models.1,321
04Ramp

Corporate cards, expenses, and finance automation.

Corporate cards, expenses, and finance automation.1,317
05Cursor

An AI code editor that helps you build software.

An AI code editor that helps you build software.1,315
06Etched

Chips purpose-built to run transformer models.

Chips purpose-built to run transformer models.1,310
07Thinking Machines Lab

AI research and tools for building custom models.

AI research and tools for building custom models.1,307
08Polymarket

A prediction market for forecasting real-world events.

A prediction market for forecasting real-world events.1,305
09Sierra

Conversational AI agents for customer experience.

Conversational AI agents for customer experience.1,305
10SSI

A research lab working on safe superintelligence.

A research lab working on safe superintelligence.1,298
11OpenEvidence

AI that helps doctors find answers in medical research.

AI that helps doctors find answers in medical research.1,294
12Fireworks AI

Fast inference and fine-tuning for open AI models.

Fast inference and fine-tuning for open AI models.1,292
13Turbopuffer

A search engine for vector and full-text retrieval.

A search engine for vector and full-text retrieval.1,292
14Decagon

AI agents for customer support.

AI agents for customer support.1,283
15Mercor

Expert talent and training data for frontier AI labs.

Expert talent and training data for frontier AI labs.1,279
16Standard Intelligence

AI models that learn to use computers.

AI models that learn to use computers.1,279
17Baseten

Infrastructure for deploying and serving AI models.

Infrastructure for deploying and serving AI models.1,278
18Modal

Serverless compute for training and running AI.

Serverless compute for training and running AI.1,277
19Saronic

Autonomous vessels and maritime defense technology.

Autonomous vessels and maritime defense technology.1,276
20Applied Compute

Custom AI models and agents trained for individual companies.

Custom AI models and agents trained for individual companies.1,275
21Kalshi

A prediction market for trading on real-world events.

A prediction market for trading on real-world events.1,275
22Nominal

Software for testing and operating complex hardware.

Software for testing and operating complex hardware.1,252
23Perplexity

An AI answer engine for searching and researching the web.

An AI answer engine for searching and researching the web.1,249
24World Labs

Spatial AI that creates and understands 3D worlds.

Spatial AI that creates and understands 3D worlds.1,246
25Exa

Web search and research infrastructure for AI agents.

Web search and research infrastructure for AI agents.1,241
26Physical Intelligence

General-purpose AI models for robots.

General-purpose AI models for robots.1,239
27Periodic Labs

AI scientists and autonomous labs for materials discovery.

AI scientists and autonomous labs for materials discovery.1,237
28Fleet AI

Simulated environments and training challenges for AI agents.

Simulated environments and training challenges for AI agents.1,230
29Neros

American-made drones and autonomy for defense.

American-made drones and autonomy for defense.1,226
30Together AI

A cloud for training, fine-tuning, and serving AI models.

A cloud for training, fine-tuning, and serving AI models.1,224
31Mach Industries

Autonomous defense systems and the factories that build them.

Autonomous defense systems and the factories that build them.1,221
32AfterQuery

Expert reasoning and training data for frontier AI models.

Expert reasoning and training data for frontier AI models.1,220
33Scale AI

Data, evaluations, and infrastructure for building AI.

Data, evaluations, and infrastructure for building AI.1,216
34Harvey

AI research, drafting, and workflows for legal teams.

AI research, drafting, and workflows for legal teams.1,215
35micro1

Expert data, training environments, and evaluations for AI.

Expert data, training environments, and evaluations for AI.1,205
36Flapping Airplanes

An AI research lab focused on learning from less data.

An AI research lab focused on learning from less data.1,192
37Factory

AI agents that automate software development.

AI agents that automate software development.1,191
38Handshake

A talent network connecting experts with AI labs and employers.

A talent network connecting experts with AI labs and employers.1,187
39Vercel

Infrastructure for building and deploying web applications.

Infrastructure for building and deploying web applications.1,176
40ElevenLabs

AI voices, audio generation, and conversational agents.

AI voices, audio generation, and conversational agents.1,175
41Aaru

Simulations of people for consumer research.

Simulations of people for consumer research.1,165
42Fluidstack

GPU clusters and data centers for frontier AI labs.

GPU clusters and data centers for frontier AI labs.1,159
43LangChain

Tools for building, evaluating, and deploying AI agents.

Tools for building, evaluating, and deploying AI agents.1,152
44Abridge

AI that turns clinical conversations into medical documentation.

AI that turns clinical conversations into medical documentation.1,150
45Skild AI

A general-purpose AI brain for robots.

A general-purpose AI brain for robots.1,150
46Astranis

Small communications satellites for dedicated broadband.

Small communications satellites for dedicated broadband.1,149
47Antares

Nuclear microreactors for defense and critical infrastructure.

Nuclear microreactors for defense and critical infrastructure.1,148
48Turing

Expert training data and AI engineering for labs and enterprises.

Expert training data and AI engineering for labs and enterprises.1,146
49Vanta

Automated security compliance and trust management.

Automated security compliance and trust management.1,141
50Linear

Product planning and issue tracking for software teams.

Product planning and issue tracking for software teams.1,138
51Runway

AI models and creative tools for generating video.

AI models and creative tools for generating video.1,138
52Pylon

AI-powered customer support software for B2B teams.

AI-powered customer support software for B2B teams.1,136
53Notion

A workspace for notes, docs, projects, and AI.

A workspace for notes, docs, projects, and AI.1,133
54Lovable

Build web apps by describing what you want.

Build web apps by describing what you want.1,131
55Mercury

Banking and financial tools for ambitious companies.

Banking and financial tools for ambitious companies.1,131
56Luma AI

AI models for generating video and visual worlds.

AI models for generating video and visual worlds.1,123
57Surge AI

Expert human data and evaluations for frontier AI models.

Expert human data and evaluations for frontier AI models.1,123
58Tailscale

Secure networking that connects teams, devices, and services.

Secure networking that connects teams, devices, and services.1,118
59Ambience Healthcare

AI documentation, coding, and workflows for clinicians.

AI documentation, coding, and workflows for clinicians.1,115
60Cartesia

Real-time voice AI built on state space models.

Real-time voice AI built on state space models.1,113
61Mithril

A marketplace for flexible GPU compute across cloud providers.

A marketplace for flexible GPU compute across cloud providers.1,109
62Supabase

An open source backend platform built on Postgres.

An open source backend platform built on Postgres.1,104
63Hebbia

AI agents for financial research and document analysis.

AI agents for financial research and document analysis.1,102
64Bedrock Robotics

Autonomous systems for construction equipment.

Autonomous systems for construction equipment.1,101
65Castelion

Mass-produced hypersonic strike systems.

Mass-produced hypersonic strike systems.1,100
66Granola

An AI notepad that turns meetings into useful notes.

An AI notepad that turns meetings into useful notes.1,098
67Browserbase

Cloud browsers and tools for AI agents.

Cloud browsers and tools for AI agents.1,096
68Clay

Data enrichment and AI workflows for go-to-market teams.

Data enrichment and AI workflows for go-to-market teams.1,086
69Hadrian

Automated factories for precision aerospace and defense parts.

Automated factories for precision aerospace and defense parts.1,067
70Watney Robotics

Robots that maintain data centers.

Robots that maintain data centers.1,061
71Rillet

AI-native accounting and financial reporting software.

AI-native accounting and financial reporting software.1,057