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Best Infrastructure AI Startups in United States

100 startups match both filters.

Databricks

Verified
US est. 2013

The data + AI company

Raised
$5.6B
Stage
S-L
95

Figure AI

Verified
US est. 2022

General-purpose humanoid robots

Raised
$1.7B
Stage
S-C
90

Upscale AI

US est. 2025

Pure-play AI networking infrastructure

Raised
$300M
Stage
S-A
90

VAST Data

US est. 2016

Unifying software layer for AI infrastructure

Raised
$2.4B
Stage
S-F
88

Quantinuum

US est. 2021

World's largest integrated quantum computing company

Raised
$2.6B
Stage
IPO
86

Scale AI

Verified
US est. 2016

Data labeling and AI infrastructure platform powering frontier models for enterprises and governments.

Raised
$14.3B
Stage
STRATEGIC
85

VoltaGrid

US est. 2020

VoltaGrid provides hybrid power solutions that reduce emissions, optimize energy loads, and lower costs for industrial applications and data centers.

Raised
$775M
Stage
STRATEGIC EQUITY INVESTMENT
85

Groq

Verified
US est. 2016

Fastest AI inference on the planet

Raised
$2.3B
Stage
S-E
84

Crusoe

Verified
US est. 2018

Sustainable AI cloud infrastructure

Raised
$1.4B
Stage
S-E
84

Cerebras Systems

Verified
US est. 2016

Wafer-scale AI chips for unprecedented speed

Raised
$8.0B
Stage
OTHER
84

CoreWeave

US est. 2017

The Essential Cloud for AI, purpose-built to power pioneers' most complex workloads with next-generation infrastructure and intelligent tools.

Raised
$21B
Stage
POST-IPO EQUITY
84

DataRobot

US est. 2012

The only unified agent workforce platform built for enterprise outcomes, not endless pilots.

Raised
$1.1B
Stage
S-G
83

Lambda

Verified
US est. 2012

GPU cloud for AI teams

Raised
$2.0B
Stage
S-E
82

Tenstorrent

US

Tenstorrent provides high-performance AI compute solutions, from cards and workstations to scale-out servers, powered by flexible, open-source IP.

Raised
$1.2B
Stage
S-D
82

SambaNova

US

The fastest AI inference platform, purpose-built for agentic AI with custom dataflow technology and three-tier memory architecture.

Raised
$1.5B
Stage
S-E
82

OpenRouter

US est. 2023

A unified API gateway to 400+ LLMs across 60+ providers

Raised
$153M
Stage
S-B
76

Ndea

US est. 2025

Frontier AI lab building AGI through deep learning-guided program synthesis.

Raised
$43M
Stage
Seed
75

Parallel

US est. 2023

Web search and research API purpose-built for AI agents

Raised
$230M
Stage
S-B
74

Emerald AI

US est. 2024

Turns AI data centers into flexible grid assets that ease power demand

Raised
$47.2M
Stage
Seed
74

Unconventional AI

US est. 2025

Reinventing the computer with brain-inspired, energy-efficient AI hardware

Raised
$475M
Stage
Seed
74

Inferact

US est. 2025

Commercial inference engine from the creators of vLLM

Raised
$150M
Stage
Seed
73

Story Protocol

US est. 2022

Programmable IP blockchain for tracking and monetizing AI-era content

Raised
$134M
Stage
S-B
73

Mercor

US

Mercor is an AI-powered platform connecting top-tier remote AI talent with companies shaping the future of artificial intelligence.

Raised
$485.6M
Stage
S-C
72

RadixArk

US est. 2025

Open infrastructure for frontier AI, built on SGLang

Raised
$100M
Stage
Seed
72

io.net

US est. 2022

Decentralized GPU cloud network aggregating compute for AI and ML workloads

Raised
$40M
Stage
S-A
72

FriendliAI

US est. 2021

Fast, cost-efficient generative AI inference for any model

Raised
$25M
Stage
Seed
72

EnCharge AI

US est. 2022

Analog in-memory AI chips that slash energy use for inference

Raised
$144M
Stage
S-B
71

DeepInfra

US est. 2022

High-throughput, low-cost AI inference cloud

Raised
$133M
Stage
S-A
71

MatX

US est. 2024

Chips built from the ground up for frontier large language models

Raised
$545M
Stage
S-B
71

Hugging Face

US est. 2016

The AI community building the future of machine learning.

Raised
$970M
Stage
S-E
70

Skyflow

US

Skyflow provides runtime AI data control, securing sensitive data across datastores, models, and AI agents.

Raised
$137.5M
Stage
S-B
70

Standard AI

US est. 2017

Computer vision for autonomous checkout in physical retail.

Raised
$236M
Stage
S-C
70

/dev/agents

US est. 2024

An operating system purpose-built for the era of AI agents.

Raised
$56M
Stage
Seed
70

Mem0

US est. 2024

The memory layer for AI agents and personalized AI applications

Raised
$24M
Stage
S-A
70

GridCARE

US est. 2024

Physics-based AI that unlocks hidden power-grid capacity to accelerate AI data centers

Raised
$77.5M
Stage
S-A
70

BentoML

US est. 2019

Unified inference platform to run AI at scale

Raised
$20M
Stage
Seed
70

Genmo

US est. 2022

Open-source generative AI for video, building state-of-the-art text-to-video foundation models.

Raised
$28.4M
Stage
S-A
69

KERNEL

US est. 2025

Crazy fast, open source infra for AI agents to use the Internet

Raised
$22.5M
Stage
S-A
69

Lamini

US est. 2022

Enterprise platform for tuning and running custom LLMs

Raised
$25M
Stage
S-A
69

Eridu

US est. 2024

Rebuilding the AI data center network to break the interconnect wall

Raised
$230M
Stage
S-A
69

Parasail

US est. 2024

Pay-per-token AI inference supercloud that puts developers in control

Raised
$42M
Stage
S-A
68

Chalk

US est. 2022

AI data platform delivering real-time context for models and agents

Raised
$60M
Stage
S-A
68

Vana

US est. 2021

Decentralized network for user-owned data to train AI models

Raised
$25M
Stage
S-A
68

Coval

US est. 2024

Simulation and evaluation platform for voice and chat AI agents, modeled on self-driving car testing.

Raised
$3.3M
Stage
Seed
67

Luminal

US est. 2025

Making AI run fast on any hardware

Raised
$5.8M
Stage
Seed
67

Manufact (formerly mcp-use)

US est. 2025

Open source SDK & cloud infrastructure for MCP Servers & ChatGPT Apps

Raised
$6.8M
Stage
Seed
67

SF Compute

US est. 2023

A real-time marketplace for AI compute

Raised
$52M
Stage
Seed
67

Phaidra

US

AI agents for AI factories, optimizing complex power, cooling, and workload management systems to maximize tokens per watt.

Raised
$75M
Stage
S-B
66

Dedalus Labs

US est. 2025

Compute substrate for AI agents

Raised
$11.5M
Stage
Seed
66

Native

US est. 2024

Security-by-design control plane for multi-cloud and AI infrastructure

Raised
$42M
Stage
S-A
66

Hyperbolic

US est. 2022

Open-access AI cloud for compute and inference

Raised
$20M
Stage
Seed
66

Vectara

US

The Unified Context Layer for building AI agents across SaaS, VPC, and On-Prem environments.

Raised
$28.5M
Stage
Seed
65

Runpod

US

The fastest way to deploy and scale AI workloads with on-demand GPUs and serverless infrastructure.

Raised
$20M
Stage
Seed
65

truthsystems

US est. 2025

Automatically blocking risky behavior with real-time governance agents

Raised
$4.5M
Stage
Seed
65

Qualified Health

US est. 2024

Enterprise generative AI infrastructure and governance for health systems

Raised
$155M
Stage
S-A
65

Liquid AI

US est. 2023

Efficient general-purpose foundation models built for edge, on-device, and cloud deployment at every scale.

Raised
$250M
Stage
S-A
64

Lightmatter

US est. 2017

Photonic chips that move data with light for next-gen AI data centers

Raised
$850M
Stage
S-D
64

Boundary (BAML)

US est. 2023

BAML, a programming language and toolchain for building type-safe, structured-output LLM applications.

Stage
Seed
64

Ragie

US est. 2024

Fully managed RAG-as-a-Service for developers

Raised
$5.5M
Stage
Seed
64

Oximy

US est. 2026

See and control all AI activity across your enterprise

Raised
$500K
Stage
Seed
64

Terminal Use

US est. 2026

Vercel for background agents

Raised
$500K
Stage
Seed
64

Sponge

US est. 2026

Financial infrastructure for the agent economy

Raised
$500K
Stage
Seed
64

Rubric AI

US est. 2026

Reasoning and verification infra for AI

Raised
$500K
Stage
Seed
64

Moda

US est. 2026

The monitoring layer your AI agents need

Raised
$500K
Stage
Seed
64

The Token Company

US est. 2026

Compression middleware that improves LLM outputs

Raised
$500K
Stage
Seed
64

IncidentFox

US est. 2026

AI SRE agent that triages, coordinates, and fixes production incidents

Raised
$500K
Stage
Seed
64

Orthogonal

US est. 2026

Agentic Payments for APIs

Raised
$500K
Stage
Seed
64

RunAnywhere

US est. 2026

The default way of running on-device AI at Scale

Raised
$500K
Stage
Seed
64

Klaus AI

US est. 2026

Fast and Safe OpenClaw on the cloud

Raised
$500K
Stage
Seed
64

Captain

US est. 2026

Give AI agents accurate knowledge search that scales

Raised
$500K
Stage
Seed
64

Autumn AI

US est. 2026

Stalk your prospects at scale

Raised
$500K
Stage
Seed
64

Minicor

US est. 2026

RPA platform for deploying AI into legacy desktop systems

Raised
$500K
Stage
Seed
64

ProjectX

US est. 2026

Infinity: the first OS where humans and agents work with no limits

Raised
$500K
Stage
Seed
64

Interfaze

US est. 2026

AI model built for deterministic developer tasks

Raised
$500K
Stage
Seed
64

Ardent

US est. 2026

Database sandboxes for Agents

Raised
$500K
Stage
Seed
64

Wato

US est. 2026

Shared memory, tools, and workflows for agents across teams

Raised
$500K
Stage
Seed
64

Scope

US est. 2026

The infra layer for AI agent experience

Raised
$500K
Stage
Seed
64

TakeCareOS

US est. 2026

Building infrastructure for AI-native care providers

Raised
$500K
Stage
Seed
64

GovGuard

US est. 2026

AI Infrastructure for Government Agencies

Raised
$500K
Stage
Seed
64

Context.dev

US est. 2026

We give AI agents realtime web context

Raised
$500K
Stage
Seed
64

Hyperspell

US est. 2025

Memory for AI Agents

Raised
$500K
Stage
Seed
64

SF Tensor

US est. 2025

Infrastructure for AI labs to focus on research

Raised
$500K
Stage
Seed
64

Sciloop

US est. 2025

Expert STEM reasoning data for frontier AI labs

Raised
$500K
Stage
Seed
64

AgentMail

US est. 2025

Email Inboxes for AI Agents

Raised
$6.5M
Stage
Seed
64

Modelence

US est. 2025

The full-stack platform for agentic development

Raised
$500K
Stage
Seed
64

Imprezia

US est. 2025

The World's First AI Ad Network

Raised
$500K
Stage
Seed
64

LLM Stats

US est. 2025

Independent AI evaluations lab

Raised
$500K
Stage
Seed
64

Runloop

US est. 2024

Enterprise-grade cloud infrastructure and devboxes for AI coding agents

Raised
$7M
Stage
Seed
64

MemryX

US est. 2019

Energy-efficient edge AI accelerator chips for on-device inference

Raised
$63M
Stage
S-B
64

Anyscale

US est. 2019

Production-scale AI infrastructure powered by Ray for distributed training, data curation, and batch inference.

Raised
$260M
Stage
S-C
63

Overshoot

US est. 2026

AI Infra for real-time vision applications

Raised
$500K
Stage
Seed
63

Chamber

US est. 2026

The AIOps Agent for ML Teams

Raised
$500K
Stage
Seed
63

Salus

US est. 2026

Guardrails to validate your agent's actions before they execute

Raised
$500K
Stage
Seed
63

StableBrowse

US est. 2026

Browser Layer for AI agents

Raised
$500K
Stage
Seed
63

Anon

US est. 2023

Authentication and automation infrastructure so AI agents can act on the web

Raised
$14.5M
Stage
Pre-S
62

Banana

US est. 2021

Inference hosting for AI teams who ship fast and scale faster.

Raised
$3.4M
Stage
Seed
61

Zibra Labs

US est. 2026

Distributed Compute for AI

Raised
$500K
Stage
Seed
61

Nerviom

US est. 2025

AI Autopilot for Infrastructure Permitting

Raised
$500K
Stage
Seed
61

Neurophos

US est. 2020

Metasurface optical processors for exaflop-scale AI inference

Raised
$118M
Stage
S-A
61

Modular

US

A unified AI inference platform for high-performance, portable compute, enabling full optimisations from GPU kernel to API endpoint.

60