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Best Agents AI Startups in United States

48 startups match both filters.

Cursor

US est. 2022

The AI code editor built for productive engineers.

Raised
$7.6B
Stage
S-D
85

Notion AI

Verified
US est. 2013

Connected AI workspace

Raised
$270M
Stage
SECONDARY
77

Cognition

US est. 2023

Applied AI lab building Devin, the AI software engineer.

Raised
$4.1B
Stage
S-E
74

Crescendo

US est. 2024

AI-native contact center blending agents and humans

Raised
$50M
Stage
S-C
74

xAI

Verified
US est. 2023

AI designed to understand the universe

Raised
$56B
Stage
S-E
72

Grammarly

US est. 2009

AI writing assistant for individuals and teams.

Raised
$1.2B
Stage
GROWTH
69

Databricks

Verified
US est. 2013

The data + AI company

Raised
$10.6B
Stage
OTHER
69

DataRobot

US est. 2012

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

Raised
$1.1B
Stage
S-G
67

Ema

US est. 2023

Universal AI employee for the enterprise

Raised
$86M
Stage
SERIES A EXTENSION
67

7AI

US est. 2024

Agentic cybersecurity platform deploying autonomous AI security agents for alert triage and investigation.

Raised
$166M
Stage
S-A
67

Sierra

Verified
US est. 2023

Conversational AI agents for every business

Raised
$2.2B
Stage
S-D
65

Augment

US est. 2024

AI teammate that automates freight order-to-cash workflows

Raised
$110M
Stage
S-A
65

Model ML

US est. 2024

AI workspace that automates investment banking and finance workflows

Raised
$87M
Stage
Seed
65

Jasper

US est. 2021

AI copilot for enterprise marketing teams.

Raised
$125M
Stage
S-C
64

Decagon

Verified
US est. 2023

AI agents that actually solve customer problems

Raised
$546M
Stage
S-D
64

Augment Code

US est. 2022

AI agents that understand your entire codebase, from IDE to CLI to code review.

Raised
$252M
Stage
S-B
64

Crosby

US est. 2025

AI-native law firm delivering fast contract review through a Slack-native, services-as-software model.

Raised
$80M
Stage
S-B
64

Contextual AI

US est. 2023

Build specialized RAG agents for the enterprise

Raised
$100M
Stage
Seed
64

Exaforce

US est. 2023

Agentic SOC platform for real-time threat detection and response

Raised
$200M
Stage
S-B
62

LangChain

Verified
US est. 2022

Build context-aware AI applications

Raised
$125M
Stage
S-B
61

Ivo

US est. 2022

AI contract review and intelligence for enterprise legal teams

Raised
$81M
Stage
S-B
61

Phia

US est. 2025

AI personal shopping assistant that compares prices and resale value across thousands of brands

Raised
$43M
Stage
S-A
61

Poke

US est. 2024

An AI personal assistant that lives inside your text messages

Raised
$25M
Stage
S-A
61

Nomic AI

US est. 2022

Open-source embeddings and Atlas data maps for AI teams

Raised
$19M
Stage
S-A
60

/dev/agents

US est. 2024

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

Raised
$56M
Stage
Seed
60

Mem0

US est. 2024

The memory layer for AI agents and personalized AI applications

Raised
$24M
Stage
S-A
60

Mastra

US est. 2024

The open-source TypeScript framework for building AI agents

Raised
$13M
Stage
Seed
60

Avantos

US est. 2024

AI operating system for wealth and financial services firms

Raised
$35M
Stage
Seed
60

Sola

US est. 2024

Agentic process automation that records a workflow once and runs it autonomously

Raised
$21M
Stage
Seed
60

Inflection AI

ACQUIRED
US est. 2022

Personal AI for everyone

Raised
$1.6B
Stage
S-B
59

Day.ai

US est. 2023

An AI-native CRM that builds itself from your emails, meetings, and conversations.

Raised
$24M
Stage
S-A
59

Liberate

US est. 2022

Reasoning AI agents that automate insurance sales, service and claims

Raised
$72M
Stage
S-B
59

Accrual

US est. 2024

AI-native platform unifying tax prep and review for accounting firms

Raised
$75M
Stage
VENTURE
59

Autonomize AI

US est. 2022

Agentic AI orchestration platform for healthcare and life sciences operations

Raised
$32M
Stage
S-A
59

Serval

US est. 2024

Dual AI agents that automate enterprise IT service management safely

Raised
$127M
Stage
S-A
59

Lassie

US est. 2024

AI agents that run the back office of small businesses end-to-end

Raised
$47M
Stage
S-A
59

Adept AI

ACQUIRED
US est. 2022

AI that takes actions in any software

Raised
$350M
Stage
M&A
58

Poolside

Verified
US est. 2023

AI platform for software engineering

Raised
$500M
Stage
GROWTH
58

Writer

Verified
US est. 2020

Full-stack generative AI for enterprise

Raised
$321M
Stage
S-C
58

Glean

Verified
US est. 2019

Work AI for the entire enterprise

Raised
$750M
Stage
S-F
58

Norm Ai

US est. 2022

Regulatory AI agents that turn rules into compliance automation

Raised
$229.1M
Stage
S-C
58

Amperos Health

US est. 2024

AI agents for healthcare denial management and revenue recovery

Raised
$20.2M
Stage
S-A
58

Agency

US est. 2024

Agentic AI for customer success and customer experience

Raised
$20M
Stage
S-A
58

Keycard

US est. 2024

Identity and access management built for AI agents

Raised
$38M
Stage
S-A
58

Edra

US est. 2024

AI agents that learn how your business runs, then automate the work

Raised
$36.5M
Stage
S-A
58

Astrocade

US est. 2022

AI agents that let anyone create and remix games in minutes

Raised
$68M
Stage
S-B
58

Levelpath

US est. 2022

AI-native procurement platform with autonomous purchasing agents

Raised
$100M
Stage
S-B
58

Mandolin

US est. 2024

AI agents that automate specialty drug access and buy-and-bill workflows

Raised
$40M
Stage
S-A
58