Company lists · Data refreshed September 2026

Top 23 Machine learning data companies based in San Francisco, United States

RevenueBase identified 60 company matches for machine learning data companies associated with San Francisco, United States as of September 2026 and tracks 4,644 professional contacts across them, including 395 with verified work emails. Across the United States, San Francisco is the largest hub for this category.

This list covers company matches for machine learning data companies associated with San Francisco, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built
60Companies
4,644Contacts tracked
395Verified emails
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The 23 largest machine learning data companies based in San Francisco, United States

Ranked by team size
Top 23 of 60 company matches for machine learning data companies based in San Francisco, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 20261,001-5,0003,009 contacts →

Exact match

“What Does Sama Do Sama gets your AI project to production-and helps you stay there.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 202651-200441 contacts →

Exact match

“Labelbox builds and operates reinforcement learning data factories for the world’s leading AI labs and enterprises, powering the next generation of frontier models and AI…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 202651-200356 contacts →

Exact match

“SuperAnnotate bridges the gap between cutting-edge AI innovation and the high-quality human data that powers it - helping advanced AI teams build more intelligent models.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 202611-50119 contacts →

Exact match

“Shipd is the platform where exceptional individuals are paid to solve problems that stump the best foundation models.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchSan Francisco, United StatesHQ recorded Sep 28, 202611-5082 contacts →

Exact match

“Through the use of first-party data collection and machine learning, Northbeam delivers actionable insights to DTC and ecommerce brands that result in a clear picture of your…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 202651-20078 contacts →

Exact match

“HumanSignal enables data science teams to build AI models with their company DNA.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 202611-5061 contacts →

Exact match

“At Aligned, we believe that as AI models become more sophisticated, deep subject-matter expertise becomes essential to push the frontier of AI performance and ensure these systems…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchSan Francisco, United StatesHQ recorded Sep 28, 202611-5029 contacts →

Exact match

“Essential AI is on a mission to make frontier AI more accessible through an open, collaborative platform.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 202611-5023 contacts →

Exact match

“Wiro was founded in 2023 for providing the growing demand for AI and machine learning technologies across various sectors.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchSan Francisco, United StatesHQ recorded Sep 28, 202651-20022 contacts →

Exact match

“StardustAI provides data annotation and data management services to global artificial intelligence companies.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 20261-1021 contacts →

Exact match

“Abundant is an applied research lab building the simulation engine for superintelligence.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12Exact matchSan Francisco, United StatesHQ recorded Sep 28, 202611-5015 contacts →

Exact match

“Langfuse is an open source AI engineering platform.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 20261-1013 contacts →

Exact match

“A 100% open-source company on a mission to democratize how the AI community collaborates on models, datasets, and applications so that the AI of AI has more choices than just a…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchSan Francisco, United StatesHQ recorded Sep 28, 202611-5010 contacts →

Exact match

“DagsHub allows you to curate and annotate multimodal datasets, track experiments, and manage models on a single platform.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 20261-109 contacts →

Exact match

“Silicon Valley Consulting is a San Francisco-based company.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 20261-108 contacts →

Exact match

“Generate, annotate, clean and enrich datasets for all your AI needs with Refuel's LLM-powered platform.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 20261-105 contacts →

Exact match

“We are building state of the art ML tools with proven revenue generation capabilities for retail and e-commerce.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 202611-504 contacts →

Exact match

“Featureform makes it easier for developers to deliver the right data, at the right time, for the next generation of intelligent systems.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 20261-104 contacts →

Exact match

“We specialize in human-in-the-loop data labeling for frontier AI teams.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 20261-103 contacts →

Exact match

“Unbox Research is a machine learning research & development company.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 20261-102 contacts →

Exact match

“We enable AI at scale.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchSan Francisco, United StatesHQ recorded Sep 28, 20261-102 contacts →

Exact match

“Zaqlick helps Seed to Series B SaaS and AI teams turn raw market chatter into living, learning customer personas, so they can build what users actually want.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchSan Francisco, CA, United StatesHQ recorded Sep 28, 20261-101 contacts →

Exact match

“At PropulsionAI, we’re on a mission to redefine the AI model training landscape by providing AI developers with an advanced platform that's not just powerful but also…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 23 of 60 machine learning data companies based in San Francisco, United States

See the full list, filter by size, metro and specialty, and access 395 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Machine learning data companies based in San Francisco, United States at a glance

As of Sep 28, 2026
8.5%Verified-email coverage
77.4Average contacts per company
1-10Median size (employees)
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
30
11-50
21
51-200
8
1,001-5,000
1

Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 60 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with San Francisco, United States whose business descriptions match “machine learning data companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 395 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Machine learning data companies by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “machine learning data companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many machine learning data companies are there based in San Francisco, United States?

RevenueBase identified 60 company matches for machine learning data companies associated with San Francisco, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

SAMA tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most machine learning data companies?

San Francisco leads the United States with 60 company records, followed by New York (48) and Austin (14).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 395 professional contacts with verified work emails tracked across these 60 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.