Company lists · Data refreshed September 2026

Top 25 AI model evaluation platforms worldwide

RevenueBase identified 366 AI model evaluation platforms worldwide as of September 2026 and tracks 41,154 professional contacts across them, including 3,666 with verified work emails. The United States is the largest market and San Francisco the largest hub.

This list covers AI model evaluation platforms worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026. Country and city lists for AI model evaluation platforms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review
366Companies
41,154Contacts tracked
3,666Verified emails
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The 25 largest AI model evaluation platforms worldwide

Ranked by team size
Top 25 of 366 AI model evaluation platforms worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to AI model evaluation platforms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceKirkland, WA, United StatesHQ checked Sep 27, 2026n/a19,890 contacts →

Strong evidence

“Appen has been a leader in AI training data for over 25 years, providing high-quality, diverse datasets that power the world's leading AI models.”

Source: RevenueBase Database · checked Sep 27, 2026
2Strong evidenceSan Jose, CA, United StatesHQ checked Sep 27, 202610001+6,538 contacts →

Strong evidence

“iMerit is a leader in expert data solutions for training, tuning and evaluating AI models and computer vision systems.”

Source: RevenueBase Database · checked Sep 27, 2026
3Partial evidenceUs / Uk / Nepal / Kenya, United StatesHQ checked Sep 27, 20261,001-5,0003,574 contacts →

Partial evidence

“Bridge the gap between your AI’s promise and its real-world performance.”

Source: RevenueBase Database · checked Sep 27, 2026
4Partial evidenceRedmond, WA, United StatesHQ checked Sep 27, 20265,001-10,0002,982 contacts →

Partial evidence

“Zero distance innovation for GenAI creators and industries Expertly engineering platforms and curating multimodal, multilingual data, we empower the ‘Magnificent Seven’ and…”

Source: RevenueBase Database · checked Sep 27, 2026
5Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 27, 2026n/a1,323 contacts →

Partial evidence

“Kaggle is a global community of practitioners, researchers, and enthusiasts building and advancing the frontier of AI.”

Source: RevenueBase Database · checked Sep 27, 2026
6Partial evidenceRedwood City, CA, United StatesHQ checked Sep 27, 2026201-500967 contacts →

Partial evidence

“Snorkel AI is the frontier AI data lab, helping teams build the data and environments behind high-performing frontier and agentic AI.”

Source: RevenueBase Database · checked Sep 27, 2026
7Partial evidenceSingapore, CA, United StatesHQ checked Sep 27, 2026201-500770 contacts →

Partial evidence

“Thoth AI is a global AI data solutions company with R&D operations in Silicon Valley, working with AI teams to support the design, development, and deployment of production-grade…”

Source: RevenueBase Database · checked Sep 27, 2026
8Partial evidenceMountain View, CA, United StatesHQ checked Sep 27, 202651-200401 contacts →

Partial evidence

“Build Super Accurate AI with us.”

Source: RevenueBase Database · checked Sep 27, 2026
9Strong evidenceSan Mateo, CA, United StatesHQ checked Sep 27, 202651-200166 contacts →

Strong evidence

“Fireworks is the fastest way to build, tune, and scale AI on open models.”

Source: RevenueBase Database · checked Sep 27, 2026
10Strong evidenceNew York, NY, United StatesHQ checked Sep 27, 202651-200140 contacts →

Strong evidence

“The AI development platform - From idea to AI, Lightning fast.”

Source: RevenueBase Database · checked Sep 27, 2026
11Strong evidenceWilmington, DE, United StatesHQ checked Sep 27, 202651-200103 contacts →

Strong evidence

“Clarifai is an independent artificial intelligence company providing a full-stack AI platform designed to help teams create, manage, and deploy AI workloads on any compute.”

Source: RevenueBase Database · checked Sep 27, 2026
12Indirect evidenceBurlingame, CA, United StatesHQ checked Sep 27, 202651-20092 contacts →

Indirect evidence

“Galileo Technologies Inc, now part of Cisco, has fully transitioned to be a part of the Cisco brand.”

Source: RevenueBase Database · checked Sep 27, 2026
13Partial evidenceNew York, NY, United StatesHQ checked Sep 27, 202651-20089 contacts →

Partial evidence

“io.net is the intelligent stack for powering AI.”

Source: RevenueBase Database · checked Sep 27, 2026
14Strong evidenceNew York, NY, United StatesHQ checked Sep 27, 202651-20085 contacts →

Strong evidence

“Comet has been building AI developer tools since 2017, first for teams training their own models, and later for those building LLM-powered agents.”

Source: RevenueBase Database · checked Sep 27, 2026
15Partial evidenceSan Francisco Bay, CA, United StatesHQ checked Sep 27, 202651-20081 contacts →

Partial evidence

“RagaAI builds AI agents for healthcare and clinical research, taking the manual, repetitive work off teams so they can focus on patients and outcomes.”

Source: RevenueBase Database · checked Sep 27, 2026
16Strong evidenceSeattle, WA, United StatesHQ checked Sep 27, 202611-5064 contacts →

Strong evidence

“Unify data, models, and compute with the fastest path to a production-ready AI system.”

Source: RevenueBase Database · checked Sep 27, 2026
17Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 27, 202611-5061 contacts →

Strong evidence

“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…”

Source: RevenueBase Database · checked Sep 27, 2026
18Partial evidenceAustin, NC, United StatesHQ checked Sep 27, 202651-20057 contacts →

Partial evidence

“In 36 months, agentic AI systems will be an operating reality across major institutions.”

Source: RevenueBase Database · checked Sep 27, 2026
19Indirect evidence千代田区, JapanHQ checked Sep 27, 202611-5044 contacts →

Indirect evidence

“Empowering Your Potential” Society5.0 AISIGNATE® AISIGNATESIGNATE Competition SIGNATEAISIGNATE Partners TaaSTalent as a Service SIGNATEDXSIGNATE Cloud e-learning DXSaaSSoftware as…”

Source: RevenueBase Database · checked Sep 27, 2026
20Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 27, 2026n/a40 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 27, 2026
21Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 27, 202611-5034 contacts →

Partial evidence

“At Maxim AI, we are building the production infrastructure for AI.”

Source: RevenueBase Database · checked Sep 27, 2026
22Partial evidenceBellevue, WA, United StatesHQ checked Sep 27, 2026n/a31 contacts →

Partial evidence

“Every company is becoming an AI company.”

Source: RevenueBase Database · checked Sep 27, 2026
23Partial evidenceCA, United StatesHQ checked Sep 27, 202611-5029 contacts →

Partial evidence

“End-to-end AI engineering stack We started as a Python validation library.”

Source: RevenueBase Database · checked Sep 27, 2026
24Strong evidenceSan Francisco, United StatesHQ checked Sep 27, 202611-5029 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 27, 2026
25Partial evidenceSaarbrücken, GermanyHQ checked Sep 27, 202611-5029 contacts →

Partial evidence

“Unreliable AI doesn’t belong in production.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 366 AI model evaluation platforms worldwide

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AI model evaluation platforms worldwide at a glance

As of Sep 27, 2026
8.9%Verified-email coverage
112.4Average contacts per company
1-10Median size (employees)
7.1%Largest-city concentration · San Francisco
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
262
11-50
70
51-200
21
201-500
4
501-1,000
3
1,001-5,000
2
5,001-10,000
2
10001+
2

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among AI model evaluation platforms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for AI model evaluation platforms are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “AI model evaluation platforms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names AI model evaluation platforms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among AI model evaluation platforms, and records with no verified work email.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 3,666 across the full list. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

AI model evaluation platforms by location

1 lists · largest first

Every AI model evaluation platforms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names AI model evaluation platforms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many AI model evaluation platforms are there worldwide?

RevenueBase identified 366 AI model evaluation platforms worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

APPEN, headquartered in Kirkland, tops this list with the largest team on record.

Which country has the most AI model evaluation platforms?

The United States leads with 113 companies. Every AI model evaluation platforms list by country and city is linked on this page.

Which city has the most AI model evaluation platforms?

San Francisco leads with 26 headquartered companies, followed by London (12) and New York (10).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 3,666 verified decision-maker contacts tracked across these 366 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 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 Smart Search, 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.