69 Best Semantic Search Startups to Watch in 2025

The Definitive Seedtable Ranking of Semantic Search Startups

We track 71,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.

There are 660 start-ups with an aggregate funding of $27.8b. The average funding per company in this subset is $402.6m.

Last update to the database: Feb 18, 2025. See changelog.

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7

Funding Rounds

$18.2b

Money raised

OpenAI is an AI research and deployment platform.

15

Funding Rounds

$140.4m

Money raised

Synthace is a software company based out of London, UK, building automation software that gives biologists the ability to control and analyze the performance of lab hardware.

3

Funding Rounds

$17.5m

Money raised

Numerai is a hedge fund with stock market trades determined by crowdsourced artificial intelligence models. The best models receive rewards in the form of a cryptographic token called Numeraire (NMR) on the Ethereum blockchain.

1

Funding Rounds

$60.0m

Money raised

9

Funding Rounds

$3.9m

Money raised

Charles River Analytics is a Cambridge, Massachusetts-based R&D solutions provider in 1983.

10

Funding Rounds

$269.5m

Money raised

Rigetti Computing is a quantum computing company based in Berkeley, California.

4

Funding Rounds

$165.0m

Money raised

Elastic is a software company that creates products for searching for information on the Internet. It was founded in 2012 and is headquartered in San Francisco and Amsterdam.

9

Funding Rounds

$217.2m

Money raised

Density is a San Francisco-based company building a people-counting system to measure the number of people in or passing through a physical space such as a hallway, lobby, or conference hall.

Location:

Key people:

2

Funding Rounds

Hypergiant Industries is a machine learning and artificial intelligence company offering client-focused services and research and development in various fields. The company was founded by Ben Lamm and John Fremont in 2018.

9

Funding Rounds

$3.9m

Money raised

Toyon Research Corporation is a Goleta, California-based company that researches and develops radio frequency and antenna systems that was founded in 1980.

3

Funding Rounds

$113.0m

Money raised

DuckDuckGo is a company developing an Internet search engine that emphasizes protecting searchers' privacy and avoiding filtered results to meet personalized search results.

5

Funding Rounds

$2.1b

Money raised

Commonwealth Fusion Systems is a Cambridge, Massachusetts-based research and development company developing fusion power systems based on ARC tokamak reactors.

4

Funding Rounds

$92.0m

Money raised

Forethought is a San Francisco-based company providing customer service automation using generative AI technology.

Key people:

9

Funding Rounds

$462.2m

Money raised

Algolia is a company designing and building search and discovery API for websites and mobile apps. It participated in the W14 cohort of Y Combinator.

Location:

Key people:

4

Funding Rounds

$51.0m

Money raised

Adarga is a UK-based artificial intelligence software provider working with customers across defense, national security, and commercial organizations.

1

Funding Rounds

$14.5m

Money raised

CasperLabs is a Zug-based company and blockchain platform founded in 2018 by Mrinal Manohar, Clifford Sarkin and Medha Parlikar.

Location:

Zug

Key people:

4

Funding Rounds

$269.4m

Money raised

Stoke Space is a company manufacturing space vehicle components and performing scientific and technological services associated with the space industry.

4

Funding Rounds

$4.5m

Money raised

Brave is an open source web browser founded in 2015 by Brendan Eich.

Key people:

6

Funding Rounds

$83.3m

Money raised

BenchSci is a biotechnology company with a machine learning platform for researching biological compounds. It was founded in 2015 and is located in Toronto, Canada.

Location:

Key people:

7

Funding Rounds

$99.0m

Money raised

NOCD provides online therapy for obsessive-compulsive disorder (OCD).

6

Funding Rounds

$80.5m

Money raised

Hologram is a company with a platform for building Internet of Things type products

Key people:

4

Funding Rounds

$49.6m

Money raised

Inato matches the right sites to the right clinical research study, globally.

Location:

Key people:

6

Funding Rounds

$39.7m

Money raised

Also known as the Daily Muse, The Muse is a company developing an online career platform that provides job listings and career advice to people. It participated in the W12 cohort of Y Combinator. It was founded in 2011 and is located in New York City, New York.

2

Funding Rounds

Etherscan is a block explorer for Ethereum.

3

Funding Rounds

$20.0m

Money raised

You.com is an ad-free, private search engine.

Location:

Key people:

7

Funding Rounds

$918.0m

Money raised

AlphaSense is a technology company that has developed an artificial intelligence platform for market intelligence and analysis. It was founded in 2011 and is located in San Francisco, California.

Location:

Key people:

2

Funding Rounds

$15.6m

Money raised

Iris.ai is a Stabekk-headquartered artificial intelligence company developing tools and applications allowing users to research open-access research papers.

5

Funding Rounds

$528.0m

Money raised

Zomato is a company providing a search engine application that offers information on restaurants and online food delivery.

Location:

Key people:

5

Funding Rounds

$167.6m

Money raised

Kong (formerly Mashape) is a San Francisco-based company that offers open source microservice API gateway.

2

Funding Rounds

$62.0m

Money raised

Vespa.ai is a company developing a platform for low-latency computations over large, evolving data sets.

Location:

Key people:

2

Funding Rounds

$1.0m

Money raised

Sensor Tower is an app analytics and competitive app intelligence platform.

11

Funding Rounds

$603.1m

Money raised

GrubMarket is the AI-powered technology enabler and digital transformer of the American food supply chain industry.

Key people:

6

Funding Rounds

$9.6m

Money raised

AYLIEN is an artificial intelligence startup company that uses natural language processing to products and applications.

5

Funding Rounds

$11.7m

Money raised

Q-Sensei is a Brooklyn-based software company developing an enterprise search and analytics software.

Location:

Key people:

9

Funding Rounds

$411.9m

Money raised

Benchling is a company based in San Francisco focusing on life science collaboration, both private and public, through creating cloud based software tools for digital DNA sequence editing, designing and running experiments, analyzing data, and sharing research.

Industries:

Location:

Key people:

1

Funding Rounds

$2.5m

Money raised

Teleport is a Palo Alto, California-based company developing a software to assist users to find their ideal place to live and work based on their preferences for income, living costs, and quality of life.

6

Funding Rounds

$86.6m

Money raised

Prokarium is a biopharmaceutical company focused on developing vaccination and cancer immunotherapy solutions based on synthetic biology.

Location:

Key people:

4

Funding Rounds

$118.5m

Money raised

AI21 Labs is a company developing AI models for reading and writing use cases

Location:

Key people:

1

Funding Rounds

$102.0m

Money raised

MarkLogic is an American software company developing and providing an enterprise NoSQL database.

7

Funding Rounds

$24.0m

Money raised

Headset is a tech company providing an IT solution for the cannabis industry.

Key people:

2

Funding Rounds

$5.3m

Money raised

Fakespot is a New York City-based data analytics platform that works to spot fake online product reviews and help consumers make better choices. Fakespot was acquired by Mozilla in May 2023.

Location:

Key people:

6

Funding Rounds

$613.7m

Money raised

ThoughtSpot is a business intelligence platform for exploring, analyzing, and sharing real-time business analytics data.

Key people:

3

Funding Rounds

$21.5k

Money raised

Web search engine that uses profits to plant trees

Location:

Key people:

8

Funding Rounds

$100.4m

Money raised

A software-as-a-service technology company with a focus on robotic solutions for laboratories. It was founded in 2019 and is located in Menlo Park, California.

2

Funding Rounds

$4.0m

Money raised

Cryptocurrency company/ The Block is the first and final word in digital assets.

3

Funding Rounds

$21.5m

Money raised

Rockset is a San Mateo, California-based developer of a real-time analytics platform built to operate in the cloud and offer users quick queries on real-time data and user-facing analytics.

Key people:

6

Funding Rounds

$112.0m

Money raised

BitGo is a financial services company in  California that focuses on financial services, providing clients with security, custody, and liquidity solutions.

1

Funding Rounds

$18.0m

Money raised

Hiya is a Seattle-based company offering a voice performance platform.

Key people:

8

Funding Rounds

$52.8m

Money raised

Remesh is an AI-based company to gather collective insights founded in 2013 by Aaron Slodov, Andrew Konya and Gary Ellis.

Key people:

7

Funding Rounds

$15.8m

Money raised

A loyalty rewards software company. It was acquired by Oracle on November 8, 2019.

Location:

Key people:

3

Funding Rounds

$33.0m

Money raised

Rafay Systems is a Sunnyvale, California-based company offering a Kubernetes management platform.

2

Funding Rounds

$645.0k

Money raised

CHAIN Biotechnology is a live biotherapeutics company founded in 2014 and based in Nottingham and Marlow, UK. CHAIN works with the Synthetic Biology Research Centre in Nottingham and has built a live biotherapeutic platform based on Clostridia to deliver bioactive molecules to treat diseases associated with the human gut microbiome.

3

Funding Rounds

$144.0m

Money raised

An insurance technology company offering a software platform for life insurance.

1

Funding Rounds

$800.0k

Money raised

Neuroflash is a GPT-3 powered artificial intelligence assistant for creating marketing copy.

Location:

Key people:

3

Funding Rounds

$38.1m

Money raised

Algorithmia is a company building a marketplace and common API for algorithms. The company was acquired by DataRobot in July 2021.

Location:

Key people:

3

Funding Rounds

$2.0m

Money raised

Diffbot is a developer of machine learning and computer vision algorithms and public APIs for extracting data from web pages.

2

Funding Rounds

$5.2m

Money raised

Marqo is an open-source, multimodal vector search engine that allows users to store and query unstructured data (text, images, code, etc.) with a single API.

3

Funding Rounds

$41.6m

Money raised

A biotechnology and industrial automation company. It was founded in 2010 and is located in San Francisco, California.

Key people:

1

Funding Rounds

$12.0m

Money raised

Silvair, Inc. is a technology company operating in the field of the Internet of Things that delivers a lighting control software based on the Bluetooth mesh networking standard.

Key people:

2

Funding Rounds

$5.0m

Money raised

CompStak is a company founded in 2011 by Vadim Belobrovka.

2

Funding Rounds

A company developing cryogenic cooling solutions for research, material science, quantum computing, high-performance electronics, and detector applications.

9

Funding Rounds

$2.5m

Money raised

Corvid Technologies is a Mooresville, North Carolina-based supercomputer company founded in 2004.

6

Funding Rounds

$7.3m

Money raised

Liftopia is a San Francisco-based company founded in 2005 by Ron Schneidermann.

5

Funding Rounds

$391.5m

Money raised

Globally, Zeta is recognized as a next-gen banking technology company. Our platform enables financial institutions to launch extensible and compliant banking asset and liability products, across cards, loans and deposits, rapidly.

Industries:

Key people:

7

Funding Rounds

$408.8m

Money raised

Fever is a live-entertainment discovery technology platform.

3

Funding Rounds

$68.0m

Money raised

A biotechnology company developing immune-modulation therapies for infectious diseases and cancer leveraging its technology platform and understanding of immune system mechanisms. It was founded in 2009 and is located in Vienna, Austria.

Planplan is a company founded in 2023 offering an open source product and ecommerce search engine

1

Funding Rounds

$54.0m

Money raised

YouGov is an international internet-based market research firm founded in 2000 by Stephan Shakespeare, Peter Kellner and Nadhim Zahawi.

Location:

Key people:

1

Funding Rounds

$2.7m

Money raised

Meru is a start-up building generative AI solutions for enterprise search, aiming to make it easier to manage, access, and share business data.

Location:

Key people:

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