The World's #1AI Startup Directory

Find stealth-mode startups before anyone else, research investors, and track the entire AI ecosystem — enriched daily by AI, free to search.

Emergent
CrewAI
Twine Security
Nebius
DeepSeek
Mistral AI
StackAI
Cognition AI
OpenRouter
Sakana AI
CopilotKit
LangSmith
Mastra
poolside
Pylon
Protect AI
Noma Security
CalypsoAI
Onyx Security
Lakera AI AG
Patronus AI
Lasso Security
Prompt Security
Knostic
Apex Security
Prior Labs
Composio
LM Studio
Context.ai
Decart AI

Some of our trusted clients

Lightspeed Venture PartnersDealflow

Dealflow source for stealth-mode investments

Gartner
Google
NVIDIA
Insight Partners

Index VenturesDealflow

Dealflow source for stealth-mode investments

Sequoia CapitalDealflow

Dealflow source for stealth-mode investments

Battery Ventures
Intel
U.S. Department of the NavyU.S. Navy
U.S. Department of the ArmyU.S. Army
OpenAI
xAI
SpaceX
Samsung
General Atlantic
Left Lane Capital
Lenovo
AWS
AccelDealflow

Dealflow source for stealth-mode investments

RedpointDealflow

Dealflow source for stealth-mode investments

Team8
CRVDealflow

Dealflow source for stealth-mode investments

Vega SecurityTrail Security
CyberstartsDealflow

Dealflow source for stealth-mode investments

Vega SecurityTrail Security
GCPDealflow

Dealflow source for stealth-mode investments

YL VenturesYL VenturesDealflow

Dealflow source for stealth-mode investments

MayfieldDealflow

Dealflow source for stealth-mode investments

Always fresh

Agentic intelligence layer

Our agents read funding news, hiring signals, product launches, and filings around the clock, so every profile stays current without anyone touching a spreadsheet. Then the Lighthouse Engine traces a faint signal to a fully formed company profile: Palantir-grade identity resolution and graph-network technology that follows a bare domain to the live site, the company behind it, and the real people running it, every link independently verified. It's how we surface stealth startups before they ever announce.

Reverse lookup
OSINT signals
Deep-web search
Identity resolution
Identity graph
scanning registries
Watchlist alerts Live
  • Raised a new round
    Persona AI
    Series B · $40M
  • Added 12 engineers
    Chai Discovery
    Headcount +9%
  • Released from stealth
    Olix Computing
    Now public
  • Shipped a new product
    Semble AI
    Launch detected
  • Mentioned in the news
    Geordie AI
    3 articles today
  • Opened a new office
    Observable Space
    Now hiring
  • Acquired a competitor
    Cognition AI
    M&A detected
  • Changed pricing
    OpenRouter
    New tier added
  • Raised a new round
    Persona AI
    Series B · $40M
  • Added 12 engineers
    Chai Discovery
    Headcount +9%
  • Released from stealth
    Olix Computing
    Now public
  • Shipped a new product
    Semble AI
    Launch detected
  • Mentioned in the news
    Geordie AI
    3 articles today
  • Opened a new office
    Observable Space
    Now hiring
  • Acquired a competitor
    Cognition AI
    M&A detected
  • Changed pricing
    OpenRouter
    New tier added

Never miss a move

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Add any startup, investor, or founder to your watchlist and we'll email you the moment something changes — new funding, team growth, launches, or news. Compare any two companies side by side.

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Beyond the directory — every tool founders, investors, and operators reach for, from email finding and market maps to agent-readiness scoring and the developer API.

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Browse

Jump straight to what you're tracking

The same filters as our search — pick a value and it opens the live directory with that filter applied.

Stealth Mode

Explore by sector

Every corner of the AI ecosystem

From agentic AI and neoclouds to defense, robotics, fintech, and biotech — browse curated startups across hundreds of sectors, each enriched and ranked.

AI Infrastructure

Inference, training, GPUs, model hosting & MLOps

AI InfrastructureMLOpsAI Compute
Anthropicdeployment
San Francisco, United States

AI research and products focused on safety, developing advanced models like Claude.

$1.5B5116 ppl
Celestial AI
AI startup

Celestial AI develops Photonic Fabric, a revolutionary optical interconnect technology that scales AI compute and data movement within and across data centers, overcoming the limitations of traditional electronic interconnects.

$505M70 ppl
Positron AI, .
Reno, United States

Develops energy-efficient AI inference hardware and custom silicon chips to compete with Nvidia.

$10M154 ppl
Noma Security
Tel Aviv, Israel

Platform securing the entire data and AI lifecycle from development to production.

$132M130 ppl
Etched
AI startup

Etched is building the hardware for superintelligence by burning the transformer architecture into their chips.

$132M220 ppl
Tekst
Ghent, Belgium

Process intelligence technology to unlock AI at scale for enterprises.

$12M39 ppl
Anthropicdeployment
San Francisco, United States

AI research and products focused on safety, developing advanced models like Claude.

$1.5B5116 ppl
Celestial AI
AI startup

Celestial AI develops Photonic Fabric, a revolutionary optical interconnect technology that scales AI compute and data movement within and across data centers, overcoming the limitations of traditional electronic interconnects.

$505M70 ppl
Positron AI, .
Reno, United States

Develops energy-efficient AI inference hardware and custom silicon chips to compete with Nvidia.

$10M154 ppl
Noma Security
Tel Aviv, Israel

Platform securing the entire data and AI lifecycle from development to production.

$132M130 ppl
Etched
AI startup

Etched is building the hardware for superintelligence by burning the transformer architecture into their chips.

$132M220 ppl
Tekst
Ghent, Belgium

Process intelligence technology to unlock AI at scale for enterprises.

$12M39 ppl
Micro1
Palo Alto, United States

AI platform connecting AI labs with vetted domain experts for data labeling and training.

$38M6422 ppl
HUMAIN
Riyadh, Saudi Arabia

Saudi Arabian AI company building the full AI value chain, including data centers and Arabic LLMs.

$19B1038 ppl
Marimo
San Francisco, United States

Open-source reactive Python notebook for data and AI workloads.

$4.5B11 ppl
Olix Computing
UK

Developing an AI chip with integrated optical components for faster and more efficient AI inference.

$300M97 ppl
Lazarus AI
New York, New York, USA

Applied Intelligence Engine for regulated industries, enabling reliable AI adoption.

$63M30 ppl
RAD Security
Tel Aviv, Israel

AI-driven platform for securing AI workloads and cloud infrastructure with real-time, behavior-driven defense.

$29M38 ppl
Micro1
Palo Alto, United States

AI platform connecting AI labs with vetted domain experts for data labeling and training.

$38M6422 ppl
HUMAIN
Riyadh, Saudi Arabia

Saudi Arabian AI company building the full AI value chain, including data centers and Arabic LLMs.

$19B1038 ppl
Marimo
San Francisco, United States

Open-source reactive Python notebook for data and AI workloads.

$4.5B11 ppl
Olix Computing
UK

Developing an AI chip with integrated optical components for faster and more efficient AI inference.

$300M97 ppl
Lazarus AI
New York, New York, USA

Applied Intelligence Engine for regulated industries, enabling reliable AI adoption.

$63M30 ppl
RAD Security
Tel Aviv, Israel

AI-driven platform for securing AI workloads and cloud infrastructure with real-time, behavior-driven defense.

$29M38 ppl
Kalpa Labs
San Francisco, United States

Building advanced speech models capable of passing the Turing test and providing infrastructure for voice agents.

$2.0M2 ppl
Pruna AI
San Francisco, California, USA

AI benchmarking and evaluation platform.

$63M31 ppl
Neon
San Francisco, United States

A serverless Postgres database with separation of storage and compute.

$1.2B156 ppl
Protect AI
Seattle, United States

Cybersecurity company focused on securing AI and ML systems with innovative MLSecOps products.

$105M33 ppl
Lightwheel
Santa Clara, United States

Simulation-first platform for embodied AI: SimReady assets, synthetic + egocentric human data, evaluation tools for robot foundation models.

$158M46 ppl
Parasail
San Francisco, United States

Cloud computing service for AI model inference, optimizing costs by orchestrating global compute resources.

$42M32 ppl
Kalpa Labs
San Francisco, United States

Building advanced speech models capable of passing the Turing test and providing infrastructure for voice agents.

$2.0M2 ppl
Pruna AI
San Francisco, California, USA

AI benchmarking and evaluation platform.

$63M31 ppl
Neon
San Francisco, United States

A serverless Postgres database with separation of storage and compute.

$1.2B156 ppl
Protect AI
Seattle, United States

Cybersecurity company focused on securing AI and ML systems with innovative MLSecOps products.

$105M33 ppl
Lightwheel
Santa Clara, United States

Simulation-first platform for embodied AI: SimReady assets, synthetic + egocentric human data, evaluation tools for robot foundation models.

$158M46 ppl
Parasail
San Francisco, United States

Cloud computing service for AI model inference, optimizing costs by orchestrating global compute resources.

$42M32 ppl

Currently Raising

AI startups actively fundraising — open to intros

Browse all
ClearML

ClearML

Open-source, end-to-end MLOps platform for enterprise AI development and deployment.

Hyperspace

Hyperspace

Elasticsearch-compatible search database offering 10x speed and 3x cost savings.

Rhino Eco

Rhino Eco

Fintech startup simplifying and making solar energy financing accessible with AI.

Perfect

Perfect

Instantly connect with next-best-hires using contextual data for meaningful outreach.

Make My Day

Make My Day

Smart EV charging solutions for commercial fleets, optimizing energy and operations.

EyeContact Dx

EyeContact Dx

Software for early detection of autism spectrum disorders in toddlers using eye-tracking technology.

Brightmerge

Brightmerge

SaaS data platform for optimizing and verifying grid-tied microgrids for EV charging.

DriftSense

DriftSense

Real-time and predictive analytics for airborne pesticide drift.

Copper6

Copper6

Ad operations technology platform for publishers to simplify workflows and boost revenue.

HomeRoots

HomeRoots

B2B wholesale marketplace for furniture and lighting, connecting businesses with suppliers.

Next Dim

Next Dim

Network analysis solution for automated discovery of insights in financial transactions and payment systems.

GaitBetter

GaitBetter

Virtual reality gait rehabilitation and fall prevention solution.

xtype

xtype

Multi-instance management platform for ServiceNow, enabling DevOps and Agile practices.

Bites

Bites

A training platform for creating and managing short video-based learning content.

Blix

Blix

Generative AI platform for market research and customer feedback analysis.

Twig Health

Twig Health

Digital-first care management platform extending services for payors and value-based providers.

Cord

Cord

Real-time collaboration UI components and APIs for building multiplayer products.

WSC Sports

WSC Sports

deepdub

deepdub

AI-powered dubbing and localization solutions for audiovisual content.

Bizi

Bizi

Innovative financial solutions for small businesses to manage cashflow and grow.

News that's moving the market

The week's most-read stories across the AI ecosystem

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