High Tech · California, India

Best High Tech Companies in California, United States

Updated 2026-06-16 · Ranked by funding & momentum

7564 indexable High Tech companies headquartered in California, United States, ranked by total equity funding and recent funding momentum. Combined disclosed equity funding of $190.1B across 3379 funded companies, including 145 unicorns.

7,564
Companies
$190.1B
Total Funding
3,379
Funded
145
Unicorns
83
Rounds (90d)

Ranked: Best High Tech companies in California

#CompanyFundingValuationStage Latest roundEmployeesFoundedMomentum
1 OpenAI Unicorn
AI research and deployment solutions developing advanced artificial intelligence systems and tools for global use
$17.9B $157B
as of 2024
Series G Series G Apr 2026 831 2015 ↑ Active
2 Lambda AI Unicorn
Provider of supercomputers, clusters, and instances for artificial intelligence development
$4.3B Series E Conventional Debt May 2026 2012 ↑ Active
3 Anduril Unicorn
Provider of AI-driven defense and autonomous systems across air, land, sea, and space domains
$3.8B $14B
as of 2024
Series H Series H May 2026 2,193 2017 ↑ Active
4 Anthropic Unicorn
Provider of AI safety and research company
$4.5B $15B
as of 2023
Series G Series G Apr 2026 73 2021 ↑ Active
5 xAI Unicorn
Platform providing AI-powered assistant for image generation and trend analysis
$6.1B $24B
as of 2024
Acquired Series E Jan 2026 2023 ↑ Active
6 Mind Unicorn
Developer of robotic platform designed for industrial deployment and manufacturing tasks
$1B Series A Series A May 2026 2025 ↑ Active
7 Neuralink Unicorn
Provider of implantable brain-computer interfaces
$680M $5B
as of 2023
Series E Series E May 2026 197 2016 ↑ Active
8 Cerebras Unicorn
Provider of high-performance AI infrastructure and wafer-scale computing solutions
$750M $4B
as of 2021
Public Conventional Debt Apr 2026 2015 ↑ Active
9 Shield AI Unicorn
Developer of AI-powered platforms and software for defense applications
$930.2M $2.8B
as of 2023
Series G Series G Mar 2026 364 2015 ↑ Active
10 Skydio Unicorn
Manufacturer of autonomous drones and related software, services, and accessories
$570M $2.2B
as of 2023
Series F Series F Apr 2026 332 2014 ↑ Active
11 SambaNova Systems Unicorn
Provider of AI-powered software and hardware
$1.1B $5B
as of 2021
Series E Series E Feb 2026 497 2017 ↑ Active
12 SiMa.ai
Developer of hardware and software platform for physical artificial intelligence
$330M Series C Series C Apr 2026 161 2018 ↑ Active
13 Sierra Unicorn
A conversational AI platform that helps businesses to build customer experiences
$285M $4.5B
as of 2024
Series E Series E May 2026 2023 ↑ Active
14 Aera
Developer of a decision intelligence platform providing real-time business recommendations
$171.5M Series D Series D May 2026 186 1999 ↑ Active
15 Cognition Unicorn
Developer of an AI software engineer designed to automate coding
$196M $2B
as of 2024
Series D Series D May 2026 2023 ↑ Active
16 Nexthop AI Unicorn
AI infrastructure for cloud infrastructure
$610M Series B Series B Mar 2026 2024 ↑ Active
17 Spire
Provider of space-based data, analytics, and space services using a large nanosatellite constellation in low orbit
$246.5M Acquired Post IPO Apr 2026 132 2012 ↑ Active
18 Parallel Web Systems Unicorn
Developer of an API providing web search for AI applications
$230M Series B Series B Apr 2026 2023 ↑ Active
19 Factory Unicorn
Developer of artificial intelligence solutions for industrial automation and optimization
$220M Series C Series C Apr 2026 2023 ↑ Active
20 Replit Unicorn
AI platform to build apps, websites, and software instantly
$271.9M $1.2B
as of 2023
Series D Series D Mar 2026 92 2016 ↑ Active
21 Mojo Vision
Developer of AR-based display technology
$226.4M Series B Series B Mar 2026 150 2015 ↑ Active
22 Cala Health
Developer of a wearable non-invasive neuromodulation device
$157.1M Series D Conventional Debt Apr 2026 50 2013 ↑ Active
23 Rhoda Unicorn
Developer of robotic systems utilizing video pre-training for industrial automation
$450M Series A Series A Mar 2026 2024 ↑ Active
24 Iambic Therapeutics
Provider of AI-driven drug discovery platform for the treatment of cancer
$206.2M Series C Series C Apr 2026 50 2019 ↑ Active
25 Nuro Unicorn
Developer of autonomous driving technology for automakers and mobility providers
$2.1B $8.6B
as of 2021
Series E Series E Aug 2025 1,005 2016 ↑ Active
26 Science Unicorn
Provider of online science magazine
$360M Series C Series C Feb 2026 76 2021 ↑ Active
27 Physical Intelligence Unicorn
Developer of AI models and learning algorithms for physical robots
$1.1B Series B Series B Nov 2025 2024 ↑ Active
28 Helm
Developer of AI-first software for advanced driver-assistance systems and autonomous driving
$124M $431M
as of 2022
Series D Series D May 2026 37 2016 ↑ Active
29 Armis Unicorn
Provider of a wireless security platform for IoT applications
$800M $4.2B
as of 2024
Acquired Series E Nov 2025 500 2015 ↑ Active
30 Carbon Unicorn
Provider of three-dimensional printing services using design software and advanced materials
$682.2M $2.4B
as of 2019
Series E Series E Nov 2025 422 2013 ↑ Active
31 Upstage
Provider of AI platform for multiple task management
$118.4M Series C Series C Apr 2026 127 2020 ↑ Active
32 PsiQuantum Unicorn
Developer of photon-based universal quantum computers
$1.3B $3.1B
as of 2021
Series E Series E Sep 2025 213 2015 ↑ Active
33 AuthID
AI and cloud based identity proofing and authentication solutions for enterprises
$83.3M Public Post IPO Apr 2026 25 2011 ↑ Active
34 Scout AI
AI-powered robotic systems for defense and related applications
$115M Series A Series A Apr 2026 2024 ↑ Active
35 nEye
Provider of integrated silicon photonic switch for AI computing
$148.5M Series C Series C Apr 2026 2020 ↑ Active
36 Spring Labs
Provider of an AI-native platform for complaints management and governance risk compliance
$66.5M Series C Series C May 2026 30 2017 ↑ Active
37 Qualified Health
Provider of an enterprise AI platform for healthcare systems
$155M Series B Series B Mar 2026 2023 ↑ Active
38 Perplexity Unicorn
AI-powered search and answer generation
$415.4M $3B
as of 2024
Series E Angel Dec 2025 8 2022 ↑ Active
39 Sunday Unicorn
Developer of a home robot designed to perform household tasks
$200M Series B Series B Mar 2026 2024 ↑ Active
40 Uniphore Unicorn
Provider of a business artificial intelligence platform with agentic and model layers
$656.7M $2.5B
as of 2022
Series F Series F Oct 2025 355 2008 ↑ Active
41 Ricursive
Developer of self-improving artificial intelligence systems focused on chip design
$335M Series A Series A Jan 2026 2025 ↑ Active
42 Groq Unicorn
Provider of AI inference platforms and on-premise AI inference clusters
$1B $2.8B
as of 2024
Series E Series E Sep 2025 165 2016 ↑ Active
43 Butlr
Developer of thermal sensing technology providing building occupancy and utilization data
$71.1M Series B Series B Apr 2026 41 ↑ Active
44 SPAN
Smart energy management technology platform that modernizes residential electrical systems
$231M Series C Series C Jan 2026 220 2014 ↑ Active
45 World Labs Unicorn
Developer of artificial intelligence models for research automation and analysis
$230M Series E Series E Feb 2026 2023 ↑ Active
46 Flexiv Robotics Unicorn
Manufacturer of adaptive robots and robotic solutions for industrial automation
$122M $1B
as of 2022
Series C Series C Mar 2026 300 2016 ↑ Active
47 Upscale AI Unicorn
Developer of networking infrastructure to accelerate and scale artificial intelligence
$300M Series A Series A Jan 2026 2025 ↑ Active
48 Verkada Unicorn
Developer of enterprise video surveillance systems and platforms
$456.6M $3.2B
as of 2022
Series E Series E Nov 2025 1,700 2016 ↑ Active
49 Netomi
Provider AI-based customer service management platform
$52M $210M
as of 2021
Series C Series C Apr 2026 51 2015 ↑ Active
50 TRM Labs Unicorn
Provider of blockchain intelligence for detecting crypto-facilitated crime and compliance
$149.9M Series C Series C Feb 2026 11 2018 ↑ Active

Top 12 High Tech companies in California

#1
OpenAI Unicorn Series G
$17.9B Raised
expand_more
#1

OpenAI Unicorn Series G

location_onSan Francisco, California
Founded
2015
Employees
831
Funding raised
$17.9B
Valuation
$157B · 2024
Stage
Series G

AI research and deployment solutions developing advanced artificial intelligence systems and tools for global use. It support a wide range of applications across productivity, development, and enterprise use cases. Engages in foundational AI research, model development, and safety work to improve the capabilities and reliability of large-scale AI systems. Operates as a public benefit organization with a mission cente

Funding rounds (11 disclosed of 13)
Round Date Amount
Series G Apr 2026 $75M
Series G Mar 2026 $40M
Series G Feb 2026 $122B
Series E 2025 Undisclosed
Series F Mar 2025 $40B
Series E Nov 2024 Undisclosed
7 earlier rounds — sign up free
Tech stack
algoliaamazon cloudfrontamazon web servicesamplitudeangularjsapollo+14
#2
Lambda AI Unicorn Series E
$4.3B Raised
expand_more
#2

Lambda AI Unicorn Series E

location_onSan Jose, California
Founded
2012
Funding raised
$4.3B
Stage
Series E

Provider of supercomputers, clusters, and instances for artificial intelligence development. The company offers infrastructure for training foundation models and serving inference. It provides supercomputer resources, including high-density power, liquid cooling, and processors. The company delivers single-tenant clusters and instances optimized for artificial intelligence workloads. It focuses on security, complianc

Funding rounds (12 disclosed of 12)
Round Date Amount
Conventional Debt May 2026 $1B
Series E Nov 2025 $1.5B
Conventional Debt Aug 2025 $275M
Series D Feb 2025 $480M
Conventional Debt Apr 2024 $500M
Series C Feb 2024 $320M
6 earlier rounds — sign up free
Tech stack
6senseapple icloud mailcloudflarecloudflare bot managementcore-jsdiscourse+14
#3
Anduril Unicorn Series H
$3.8B Raised
expand_more
#3

Anduril Unicorn Series H

location_onCosta Mesa, California
Founded
2017
Employees
2,193
Funding raised
$3.8B
Valuation
$14B · 2024
Stage
Series H

Provider of AI-driven defense and autonomous systems across air, land, sea, and space domains. It develops integrated platforms that enhance situational awareness, real-time decision-making, and operational effectiveness for defense and security applications. It delivers a range of autonomous systems and software-defined defense infrastructure, including surveillance systems, unmanned platforms, and command-and-contr

Funding rounds (8 disclosed of 8)
Round Date Amount
Series H May 2026 $5B
Series G Dec 2025 $30M
Series G Jun 2025 $2.5B
Series F Aug 2024 $1.5B
Series E Dec 2022 $1.5B
Series D Jun 2021 $450M
2 earlier rounds — sign up free
Tech stack
amazon cloudfrontamazon s3amazon web servicesapolloaws certificate managercloudflare+14
#4
Anthropic Unicorn Series G
$4.5B Raised
expand_more
#4

Anthropic Unicorn Series G

location_onSan Francisco, California
Founded
2021
Employees
73
Funding raised
$4.5B
Valuation
$15B · 2023
Stage
Series G

Provider of AI safety and research company. It is an AI research and safety company offering AI models and chatbots. Its chatbot can be used for multiple industries including customer support, legal support, coaching, searching data, back-office automation, and sales.

Funding rounds (17 disclosed of 18)
Round Date Amount
Series G Apr 2026 $5B
Series G Feb 2026 $30B
Series F Jan 2026 $10B
Series F Sep 2025 $13B
Conventional Debt May 2025 $2.5B
Series E Mar 2025 $3.5B
12 earlier rounds — sign up free
Tech stack
amazon s3amazon web servicesbootstrapcloudflarecloudflare bot managementcore-js+14
#5
xAI Unicorn Acquired
$6.1B Raised
expand_more
#5

xAI Unicorn Acquired

location_onPalo Alto, California
Founded
2023
Funding raised
$6.1B
Valuation
$24B · 2024
Stage
Acquired

Platform providing AI-powered assistant for image generation and trend analysis. It is an artificial intelligence (AI) company focused on advancing scientific discovery and fostering a deeper understanding of the universe through its AI model, Grok. Grok is a powerful AI assistant designed to provide truthful, useful, and curious insights by leveraging real-time search, image generation, and trend analysis capabiliti

Funding rounds (9 disclosed of 9)
Round Date Amount
Series E Jan 2026 $20B
Series C Oct 2025 $7.5B
Conventional Debt Oct 2025 $12.5B
Conventional Debt Jul 2025 $5B
Series C Jun 2025 $5.3B
Series C Nov 2024 $6B
3 earlier rounds — sign up free
Tech stack
amazon s3amazon web servicesbase uicloudflarecloudflare bot managementcloudflare browser insights+14
#6
Mind Unicorn Series A
$1B Raised
expand_more
#6

Mind Unicorn Series A

location_onPalo Alto, California
Founded
2025
Funding raised
$1B
Stage
Series A

Developer of robotic platform designed for industrial deployment and manufacturing tasks. The platform leverages advancements in Physical AI to generalize across core tasks. It scales across manufacturing domains, designed to work alongside humans. The platform is initially focused on mastering automotive manufacturing environments.

Funding rounds (3 disclosed of 3)
Round Date Amount
Series A May 2026 $400M
Series A Mar 2026 $500M
Seed Nov 2025 $115M
Founders & key people
Tech stack
framer siteshstshttp/3open graphpriority hintsreact
#7
Neuralink Unicorn Series E
$680M Raised
expand_more
#7

Neuralink Unicorn Series E

location_onFremont, California
Founded
2016
Employees
197
Funding raised
$680M
Valuation
$5B · 2023
Stage
Series E

Provider of implantable brain-computer interfaces. It offers flagship product the N1 Implant the Link which is a coin-sized device designed to decode neural signals and enable users to control digital devices using only their thoughts. It also has an experimental device called Blindsight to restore vision in individuals with optic nerve damage by directly stimulating the visual cortex.

Funding rounds (6 disclosed of 7)
Round Date Amount
Series E May 2026 Undisclosed
Series E May 2025 $650M
Series D Nov 2023 $43M
Series D Aug 2023 $323.2M
Series C Jul 2021 $205M
Series C Apr 2019 $39.3M
1 earlier round — sign up free
Tech stack
amazon albamazon cloudfrontamazon s3amazon sesamazon web servicesapple icloud mail+14
#8
Cerebras Unicorn Public
$750M Raised
expand_more
#8

Cerebras Unicorn Public

location_onSunnyvale, California
Founded
2015
Funding raised
$750M
Valuation
$4B · 2021
Stage
Public

Provider of high-performance AI infrastructure and wafer-scale computing solutions. It leverages proprietary wafer-scale processor technology to power generative AI, real-time reasoning, conversational AI, and intelligent agent workflows with significantly higher speed and efficiency than traditional GPU-based systems. Its offerings support cloud, on-premise, and private deployment environments, enabling organization

Funding rounds (9 disclosed of 10)
Round Date Amount
Conventional Debt Apr 2026 $850M
Series H Feb 2026 $1B
Series G Sep 2025 $1.1B
Grant (prize money) Jan 2025 $1.6M
Series F Nov 2021 $250M
Series E Nov 2019 Undisclosed
4 earlier rounds — sign up free
Tech stack
cdnjscloudflarecloudflare bot managementcloudflare browser insightscookieyesgodaddy+14
#9
Shield AI Unicorn Series G
$930.2M Raised
expand_more
#9

Shield AI Unicorn Series G

location_onSan Diego, California
Founded
2015
Employees
364
Funding raised
$930.2M
Valuation
$2.8B · 2023
Stage
Series G

Developer of AI-powered platforms and software for defense applications. The company provides solutions for mission autonomy, surveillance, and object detection. Its offerings include autonomous pilot software, command and control toolkits, and autonomy development platforms. It also manufactures unmanned aircraft for intelligence, surveillance, and reconnaissance missions.

Funding rounds (16 disclosed of 17)
Round Date Amount
Series G Mar 2026 $2B
Series F Feb 2025 $591.8M
Series F Dec 2023 $100M
Venture Debt Dec 2023 $200M
Series F Sep 2023 $281.3M
Series E Dec 2022 $60M
11 earlier rounds — sign up free
Tech stack
anime.jsapple icloud mailcloudflarecloudflare bot managementcore-jsdocusign+14
#10
Skydio Unicorn Series F
$570M Raised
expand_more
#10

Skydio Unicorn Series F

location_onSan Mateo, California
Founded
2014
Employees
332
Funding raised
$570M
Valuation
$2.2B · 2023
Stage
Series F

Manufacturer of autonomous drones and related software, services, and accessories. It provides drone platforms, docking stations, attachments, and software for autonomous flight, data capture, and integration. These products serve sectors including public safety, utilities, national security, inspection, transportation, construction, and oil and gas. Services include regulatory and success support, along with develop

Funding rounds (7 disclosed of 8)
Round Date Amount
Series F Apr 2026 $110M
Series E May 2024 $170M
Series E Mar 2022 $230M
Series D Feb 2021 $170M
Series C Jul 2020 $100M
Series B Feb 2018 $42M
2 earlier rounds — sign up free
Tech stack
affirmamazon cloudfrontamazon web servicesamerican expressapple icloud mailapple pay+14
#11
SambaNova Systems Unicorn Series E
$1.1B Raised
expand_more
#11

SambaNova Systems Unicorn Series E

location_onPalo Alto, California
Founded
2017
Employees
497
Funding raised
$1.1B
Valuation
$5B · 2021
Stage
Series E

Provider of AI-powered software and hardware. The platform offers a suite of generative AI systems for enterprises and government organizations. Its suite includes ChatGPT chatbots designed for banks, law firms, healthcare providers, and other sectors.

Funding rounds (5 disclosed of 5)
Round Date Amount
Series E Feb 2026 $350M
Series D Apr 2021 $676M
Series C Feb 2020 $250M
Series B Apr 2019 $150M
Series A Mar 2018 $56M
Founders & key people
Tech stack
6senseapple icloud mailatlassian statuspagecdnjscloudflarecloudflare bot management+14
#12
SiMa.ai Series C
$330M Raised
expand_more
#12

SiMa.ai Series C

location_onSan Jose, California
Founded
2018
Employees
161
Funding raised
$330M
Stage
Series C

Developer of hardware and software platform for physical artificial intelligence. The company offers a machine learning system-on-chip, boards, and development kits. The hardware and software are designed for robotics, automotive, industrial, government, retail, and healthcare sectors. The company's platform supports computer vision, large language models, and multimodal models.

Funding rounds (7 disclosed of 8)
Round Date Amount
Series C Apr 2026 Undisclosed
Series C Aug 2025 $85M
Series B Apr 2024 $70M
Series B Jun 2023 $13M
Series B Oct 2022 $37M
Series B May 2022 $30M
2 earlier rounds — sign up free
Tech stack
amazon web servicesamerican expressapple icloud mailauth0cart functionalitycdnjs+14

Recent signals in California High Tech

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Funding & investor landscape

Total raised
$190.1B
across these companies
Companies funded
3,379
with disclosed funding
Highest-funded
$17.9B raised

Most active investors

YC Y Combinator 489 investments in High Tech PC Plug and Play Tech Center 158 investments in High Tech AH Andreessen Horowitz 126 investments in High Tech NF National Science Foundation 113 investments in High Tech T Techstars 106 investments in High Tech AV Alumni Ventures 96 investments in High Tech KV Khosla Ventures 94 investments in High Tech SC Sequoia Capital 89 investments in High Tech H HHS 82 investments in High Tech 5G 500 Global 74 investments in High Tech AA Alchemist Accelerator 73 investments in High Tech SA SV Angel 73 investments in High Tech

Notable founders in California High Tech

SA Sam Altman Co-Founder & CEO OpenAI · $17.9B raised
WZ Wojciech Zaremba Co-Founder OpenAI · $17.9B raised
SB Stephen Balaban Co-Founder & CEO Lambda AI · $4.3B raised
MG Matt Grimm Co-Founder & COO Anduril · $3.8B raised
JC Joseph Chen Co-Founder Anduril · $3.8B raised
BS Brian Schimpf Co-Founder & CEO Anduril · $3.8B raised
TS Trae Stephens Co-Founder Anduril · $3.8B raised
PL Palmer Luckey Co-Founder Anduril · $3.8B raised
BM Benjamin Mann Co-Founder Anthropic · $4.5B raised
JK Jared Kaplan Co-Founder & Chief Science Officer Anthropic · $4.5B raised
JC Jack Clark Co-Founder Anthropic · $4.5B raised
DA Daniela Amodei Co-Founder & President Anthropic · $4.5B raised

Frequently asked questions

How many High Tech companies are there in California, United States?
Radar tracks 7564 indexable High Tech companies headquartered in California, United States, India, that meet our profile-completeness bar.
What is the total funding raised by High Tech companies in California, United States?
The High Tech companies in California, United States on this list have raised a combined $190.1B in disclosed equity funding across 3379 funded companies.
Which is the highest-funded High Tech company in California, United States?
OpenAI is the highest-funded High Tech company in California, United States, with $17.9B in disclosed equity funding.
How many High Tech companies in California, United States are funded?
3379 of the 7564 High Tech companies in California, United States on this list have disclosed at least one equity funding round.
How many High Tech unicorns are there in California, United States?
145 High Tech companies in California, United States on this list are valued at $1B or more.
Who are the top investors in California, United States High Tech companies?
The most active investors in California, United States High Tech companies on this list include Y Combinator, Plug and Play Tech Center, Andreessen Horowitz, National Science Foundation, Techstars.

Rankings are computed by Radar (Fliar BI) from the Radar company master and are updated periodically. Funding and momentum scores use disclosed equity-funding data only. Figures may lag private rounds. Last updated 2026-06-16.

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