Series B Startups

Autograph

NFT platform that brings together iconic brands in sports and culture to create unique digital collections. Crypto NFT

Last round: Series B Andreessen Horowitz, Kleiner Perkins, $170M Series B in 2022

Airbyte

Airbyte is the turnkey opensource data integration platform that gives your infrastructure super powers to move data seamlessly. Data Science Analytics

Last round: Series B Benchmark, Accel, Y Combinator, $150M Series B in 2021, $1.5B valuation

NewLimit

Developing epigenetic therapies to extend human healthspan by reprogramming aging cells Biotech Healthcare

Last round: Series B Founders Fund, $130M Series B in 2025

Hebbia

Develops AI agents for financial services firms Artificial Intelligence FinTech

Last round: Series B Andreessen Horowitz, $100M Series B in 2024

mmhmm

mmhmm is a virtual camera application used to create virtual rooms, backdrops, and presentations during video calls. Video Chat SaaS

Last round: Series B Sequoia, $100M Series B in 2021

xAI

Accelerate human scientific discovery Artificial Intelligence

Last round: Series B Sequoia, Andreessen Horowitz, $6B Series B in 2024, $24.0B valuation

Commonwealth Fusion

Building the path to clean, carbon-free, limitless energy Sustainability Renewable Energies

Last round: Series B Khosla Ventures, $2B Series B in 2021

Stytch

Building passwordless authentication to start, with an eye towards making the passport of the internet Developer APIs SaaS Cybersecurity

Last round: Series B Benchmark, $90M Series B in 2021, $1.0B valuation

Adaptive Security

Protecting companies from AI-powered attacks Artificial Intelligence Cybersecurity Enterprise Software

Last round: Series B Andreessen Horowitz, OpenAI, NVIDIA, Bain Capital Ventures, $81M Series B in 2025

Story Protocol

Creator of web3 technology that aims to change the way narrative universes are formed Crypto

Last round: Series B Andreessen Horowitz, $80M Series B in 2024

Supabase

Supabase is an open source Firebase alternative SaaS Developer Tools Enterprise Software

Last round: Series B Y Combinator, $80M Series B in 2022

XBOW

Using AI to revolutionize how we approach offensive security Artificial Intelligence Cybersecurity

Last round: Series B Sequoia, $75M Series B in 2025

Nansen

Nansen is a blockchain analytics platform for crypto professionals and investors. Analytics Crypto Blockchain

Last round: Series B Andreessen Horowitz, Accel, $75M Series B in 2021

Ambience

Leading AI operating system for healthcare organizations Artificial Intelligence Healthcare

Last round: Series B Kleiner Perkins, $70M Series B in 2024

Fashinza

Fashinza is a B2B manufacturing marketplace that solves apparel/fashion supply chain challenges. Fashion E-Commerce Marketplaces

Last round: Series B Accel, $60M Series B in 2022, $45M valuation

HeyGen

Next-gen generative AI video platform with customizable AI avatars, right from your browser Artificial Intelligence

Last round: Series B Benchmark, $60M Series B in 2024

Secureframe

Builds security and compliance software SaaS Cybersecurity

Last round: Series B Kleiner Perkins, $56M Series B in 2022

Patch

Powering climate action by making the purchase of carbon credits and neutralizing emissions as easy as clicking a button Sustainability Renewable Energies Enterprise Software

Last round: Series B Andreessen Horowitz, $55M Series B in 2022

Graphite

AI code review platform which helps developers create, review and merge changes faster. Artificial Intelligence SaaS Enterprise Software

Last round: Series B Andreessen Horowitz, Accel, $52M Series B in 2025

Omnea

Building procurement orchestration platform that streamlines source-to-pay workflows Artificial Intelligence Enterprise Software

Last round: Series B Accel, Khosla Ventures, Insight Partners, $50M Series B in 2025

ROME Therapeutics

ROME Therapeutics is developing novel therapies for cancer and autoimmune diseases by harnessing the power of the repeatome. Biotech Healthcare Pharmaceuticals

Last round: Series B Andreessen Horowitz, $50M Series B in 2021, $70M valuation

Torq

Torq is a no-code automation platform for security and ops teams. Cybersecurity No-Code SaaS

Last round: Series B Bessemer, $50M Series B in 2021

Nooks

AI dialing and prospecting platform, trusted by thousands of SDRs & AEs to cut out the busywork Artificial Intelligence Sales

Last round: Series B Kleiner Perkins, $43M Series B in 2024

Socket

Socket is a developer-first security platform that protects your most critical apps from software supply chain attacks SaaS Cybersecurity

Last round: Series B Andreessen Horowitz, $40M Series B in 2024

Knoetic

Knoetic is the all-in-one platform built for Chief People Officers Human Resources SaaS Professional Networking

Last round: Series B Accel, $36M Series B in 2022

Anrok

Automates sales tax compliance across any financial stack for SaaS businesses SaaS Enterprise Software

Last round: Series B Sequoia, $30M Series B in 2024

Fieldguide

AI-powered engagement platform for Assurance and Advisory firms Artificial Intelligence Enterprise Software

Last round: Series B Y Combinator, Bessemer, $30M Series B in 2024

Mysten Labs

Mysten Labs creates foundational infrastructure to accelerate the adoption of web3. Crypto Developer Tools

Last round: Series B Andreessen Horowitz, $300M Series B in 2022, $2.0B valuation

BrowserStack

BrowserStack is a software testing platform powering over two million tests every day across 15 global data centers. SaaS Testing Developer Tools Enterprise Software

Last round: Series B Accel, $250M Series B in 2021, $4.0B valuation

Blockstream

Blockstream provides Bitcoin and blockchain technology solution for financial markets. FinTech Crypto

Last round: Series B Khosla Ventures, $210M Series B in 2021, $3.2B valuation

Base Power

Specializes in residential backup battery systems and electricity plans Hardware

Last round: Series B Andreessen Horowitz, $200M Series B in 2025

Kumo

Kumo allows businesses to make faster, simpler, and smarter predictions. SaaS Artificial Intelligence Enterprise Software

Last round: Series B Sequoia, $18M Series B in 2022

Lessen

Lessen is a platform for managing properties and maintenance services. Real Estate Property Management

Last round: Series B Khosla Ventures, $170M Series B in 2021, $1.0B valuation

Function of Beauty

Personalized Shampoo + Conditioner based on your hair type, hair goals and preferences. E-Commerce Beauty

Last round: Series B Y Combinator, $150M Series B in 2020, $1.0B valuation

Magic Eden

Leading NFT Marketplace on Solana Crypto Marketplace

Last round: Series B Sequoia, $130M Series B in 2022, $1.6B valuation

Observe.AI

Observe.AI develops a voice AI platform for contact centers, turning agents into top performers. Artificial Intelligence Sales Enterprise Software

Last round: Series B Y Combinator, $123M Series B in 2020

Hadrian

Building automated precision component factories to help space manufacturers get parts 10X faster and 2X cheaper Hardware Space

Last round: Series B Andreessen Horowitz, Founders Fund, $117M Series B in 2024

Phantom

Digital wallet reimagined for DeFi and NFTs Crypto

Last round: Series B Andreessen Horowitz, Solana, $109M Series B in 2022, $1.2B valuation

Calibrate

Calibrate is a digital metabolic health business that is changing the way the world treats weight Healthcare Wellness

Last round: Series B Founders Fund, $100M Series B in 2021

Hermeus

Hermeus is building the world's fastest commercial aircraft. Travel Space Hardware

Last round: Series B Founders Fund, Khosla Ventures, $100M Series B in 2022

Aztec

Build privacy tooling for public blockchains Crypto

Last round: Series B Andreessen Horowitz, $100M Series B in 2022

Replit

Collaborative, in-browser IDE to code in 50+ languages - no setup time required SaaS Developer Tools EdTech

Last round: Series B Y Combinator, Andreessen Horowitz, $97M Series B in 2023, $1.2B valuation

FightCamp

FightCamp provides on-demand boxing and HIIT workouts with motion trackers on wrists that track every punch thrown and every rep completed. Healthcare Fitness SaaS Hardware

Last round: Series B Y Combinator, $90M Series B in 2021

AKASA

AKASA is an AI-powered automation company for revenue cycle management in healthcare. Healthcare Artificial Intelligence

Last round: Series B Andreessen Horowitz, $80M Series B in 2021

Deepcell

Deepcell uses AI to isolate and capture cells based on morphological features, for multiple research and translational applications Healthcare Biotech Artificial Intelligence

Last round: Series B Andreessen Horowitz, $73M Series B in 2022

Snackpass

Snackpass is a social commerce platform that focuses on mobile order pickup at local restaurants. Restaurants E-Commerce

Last round: Series B Andreessen Horowitz, Y Combinator, $70M Series B in 2021, $400M valuation

Sorare

Sorare is a global fantasy football game where players can buy, trade, and play with official digital cards. Fantasy Sports Gaming Crypto

Last round: Series B Accel, Benchmark, $680M Series B in 2021, $4.3B valuation

Substack

A place for independent writing. We make it simple for a writer to start a paid newsletter Media Publishing Consumer

Last round: Series B Andreessen Horowitz, $65M Series B in 2021, $650M valuation

Tibber

Tibber is the app that learns to buy, save and control electricity for your home. Sustainability Energy Efficiency Smart Home

Last round: Series B Founders Fund, $65M Series B in 2020

BetterWorks

Performance management and goal-setting solutions designed to align the global enterprise Enterprise Software SaaS

Last round: Series B Kleiner Perkins, $65M Series B in 2021