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 684 start-ups with an aggregate funding of $28.6b. The average funding per company in this subset is $415.0m.

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

Track over 71,000 companies

Discover
Fast-growing Global startups

Seedtable uses technology and people to track over 71,000 companies to help you find the right ones to partner with.

Pricing + Sign up
OpenAI logo

OpenAI

OpenAI is an AI research and deployment platform.

7

Funding Rounds

$18.2b

Money raised

yummly logo

yummly

A company offering a visual and semantic recipe search engine and aggregator.

5

Funding Rounds

$30.8m

Money raised

Numerai logo

Numerai

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.

3

Funding Rounds

$17.5m

Money raised

1

Funding Rounds

$60.0m

Money raised

Charles River Analytics logo

Charles River Analytics

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

9

Funding Rounds

$3.9m

Money raised

Rigetti Computing logo

Rigetti Computing

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

10

Funding Rounds

$269.5m

Money raised

Elastic logo

Elastic

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.

4

Funding Rounds

$165.0m

Money raised

Density (company) logo

Density (company)

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.

9

Funding Rounds

$217.2m

Money raised

Hypergiant Industries logo

Hypergiant Industries

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.

2

Funding Rounds

Toyon Research Corporation logo

Toyon Research Corporation

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

9

Funding Rounds

$3.9m

Money raised

Ning (website) logo

Ning (website)

Ning is an online platform for people and organizations to create custom social networks.

4

Funding Rounds

$134.0m

Money raised

DuckDuckGo logo

DuckDuckGo

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

3

Funding Rounds

$113.0m

Money raised

Commonwealth Fusion Systems logo

Commonwealth Fusion Systems

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

5

Funding Rounds

$2.1b

Money raised

Forethought logo

Forethought

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

4

Funding Rounds

$92.0m

Money raised

Algolia logo

Algolia

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.

9

Funding Rounds

$462.2m

Money raised

Adarga (company) logo

Adarga (company)

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

4

Funding Rounds

$51.0m

Money raised

BrightTALK logo

BrightTALK

BrightTALK is a platform developer for B2B companies to host webinars and virtual events.

1

Funding Rounds

$20.5m

Money raised

Stoke Space logo

Stoke Space

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

4

Funding Rounds

$269.4m

Money raised

BenchSci logo

BenchSci

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.

6

Funding Rounds

$83.3m

Money raised

nOCD (health information technology company) logo

nOCD (health information technology company)

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

7

Funding Rounds

$99.0m

Money raised

Hologram (company) logo

Hologram (company)

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

6

Funding Rounds

$80.5m

Money raised

Inato logo

Inato

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

4

Funding Rounds

$49.6m

Money raised

The Muse (company) logo

The Muse (company)

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.

6

Funding Rounds

$39.7m

Money raised

Etherscan logo

Etherscan

Etherscan is a block explorer for Ethereum.

2

Funding Rounds

KAYAK (company) logo

KAYAK (company)

KAYAK is a travel search engine providing users with information regarding flights, hotels, and rental cars.

6

Funding Rounds

$229.0m

Money raised

You.com logo

You.com

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

3

Funding Rounds

$20.0m

Money raised

Iris.ai logo

Iris.ai

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

2

Funding Rounds

$15.6m

Money raised

AlphaSense logo

AlphaSense

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.

7

Funding Rounds

$918.0m

Money raised

Zomato logo

Zomato

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

5

Funding Rounds

$528.0m

Money raised

Kong (company) logo

Kong (company)

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

5

Funding Rounds

$167.6m

Money raised

Vespa.ai logo

Vespa.ai

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

2

Funding Rounds

$62.0m

Money raised

SensorTower logo

SensorTower

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

2

Funding Rounds

$1.0m

Money raised

AYLIEN logo

AYLIEN

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

6

Funding Rounds

$9.6m

Money raised

Q-Sensei logo

Q-Sensei

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

5

Funding Rounds

$11.7m

Money raised

Benchling logo

Benchling

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.

9

Funding Rounds

$411.9m

Money raised

Teleport (company) logo

Teleport (company)

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.

1

Funding Rounds

$2.5m

Money raised

Prokarium logo

Prokarium

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

6

Funding Rounds

$86.6m

Money raised

AI21 logo

AI21

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

4

Funding Rounds

$118.5m

Money raised

MarkLogic logo

MarkLogic

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

1

Funding Rounds

$102.0m

Money raised

GrubMarket logo

GrubMarket

GrubMarket is a company supplying local fresh food online and offers delivers them to customers.

10

Funding Rounds

$553.1m

Money raised

Sanofi Pasteur logo

Sanofi Pasteur

Sanofi Pasteur is a manufacturer of vaccines and related products founded in 1914 by Marcel Mérieux.

1

Funding Rounds

$43.2m

Money raised

Headset logo

Headset

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

7

Funding Rounds

$24.0m

Money raised

Oxford Nanopore Technologies logo

Oxford Nanopore Technologies

DNA sequencing company specializing in rapid long-read sequencing through nanopores.

15

Funding Rounds

$1.1b

Money raised

Fakespot logo

Fakespot

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.

2

Funding Rounds

$5.3m

Money raised

ThoughtSpot logo

ThoughtSpot

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

6

Funding Rounds

$613.7m

Money raised

Ecosia logo

Ecosia

Web search engine that uses profits to plant trees

3

Funding Rounds

$21.5k

Money raised

Strateos logo

Strateos

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.

8

Funding Rounds

$100.4m

Money raised

The Block logo

The Block

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

2

Funding Rounds

$4.0m

Money raised

Rockset logo

Rockset

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.

3

Funding Rounds

$21.5m

Money raised

Integrated DNA Technologies logo

Integrated DNA Technologies

Integrated DNA Technologies is a Coralville, Iowa-based company founded in 1987.

1

Funding Rounds

Remesh logo

Remesh

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

8

Funding Rounds

$52.8m

Money raised

INRIX logo

INRIX

Global company which provides a variety of internet services and mobile applications pertaining to road traffic

9

Funding Rounds

$125.1m

Money raised

Wonder (company) logo

Wonder (company)

Wonder is a research service company offering research work for consultants, agencies, and financial institutions.

3

Funding Rounds

CrowdTwist logo

CrowdTwist

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

7

Funding Rounds

$15.8m

Money raised

Rafay Systems logo

Rafay Systems

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

3

Funding Rounds

$33.0m

Money raised

CHAIN Biotechnology logo

CHAIN Biotechnology

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.

2

Funding Rounds

$645.0k

Money raised

Ladder (company) logo

Ladder (company)

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

3

Funding Rounds

$144.0m

Money raised

neuroflash logo

neuroflash

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

1

Funding Rounds

$800.0k

Money raised

Second Measure logo

Second Measure

A company developing platform that analyzes consumer credit card transactions to help companies understand consumer behavior, performance, and rank against their competitors.

2

Funding Rounds

$25.4m

Money raised

Algorithmia logo

Algorithmia

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

3

Funding Rounds

$38.1m

Money raised

Diffbot logo

Diffbot

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

3

Funding Rounds

$2.0m

Money raised

Marqo logo

Marqo

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.

2

Funding Rounds

$5.2m

Money raised

Emerald Cloud Lab logo

Emerald Cloud Lab

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

3

Funding Rounds

$41.6m

Money raised

Silvair, Inc. logo

Silvair, Inc.

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.

1

Funding Rounds

$12.0m

Money raised

CompStak logo

CompStak

CompStak is a company founded in 2011 by Vadim Belobrovka.

2

Funding Rounds

$5.0m

Money raised

Kiutra logo

Kiutra

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

2

Funding Rounds

Corvid Technologies logo

Corvid Technologies

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

9

Funding Rounds

$2.5m

Money raised

Liftopia logo

Liftopia

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

6

Funding Rounds

$7.3m

Money raised

Zeta logo

Zeta

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.

5

Funding Rounds

$391.5m

Money raised