Company lists · Data refreshed September 2026

Top 18 AI testing and evaluation platforms based in the United States

RevenueBase identified 67 AI testing and evaluation platforms headquartered in the United States as of September 2026 and tracks 3,619 professional contacts across them, including 398 with verified work emails. San Francisco is the largest hub.

This list covers AI testing and evaluation platforms headquartered in the United States, 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.

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
67Companies
3,619Contacts tracked
398Verified emails
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The 18 largest AI testing and evaluation platforms based in the United States

Ranked by team size
Top 18 of 67 AI testing and evaluation platforms based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to AI testing and 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
1Partial 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
2Partial 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
3Partial 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
4Indirect 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
5Partial evidenceNew York, NY, United StatesHQ checked Sep 27, 202651-20085 contacts →

Partial 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
6Partial 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
7Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 27, 202611-5061 contacts →

Partial 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
8Strong 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
9Partial evidenceNew York, NY, United StatesHQ checked Sep 27, 202611-5026 contacts →

Partial evidence

“Trusted by Fortune 100s, Arthur enables you to discover every agent, enforce policies at scale, and ship reliable AI across ML, GenAI, and agentic systems.”

Source: RevenueBase Database · checked Sep 27, 2026
10Partial evidenceBordentown, NJ, United StatesHQ checked Sep 27, 202611-5017 contacts →

Partial evidence

“With our expertise in testing analog, digital, RF, microwave, and fiber optic sub-assemblies, we excel in delivering advanced ATE (Automated Test Equipment) systems.”

Source: RevenueBase Database · checked Sep 27, 2026
11Strong evidenceSan Francisco, United StatesHQ checked Sep 27, 202611-5015 contacts →

Strong evidence

“Langfuse is an open source AI engineering platform.”

Source: RevenueBase Database · checked Sep 27, 2026
12Partial evidenceSaginaw, MI, United StatesHQ checked Sep 27, 20261-109 contacts →

Partial evidence

“Evaluate AI Agents before launch, supervise in production, and publish human readable proof across any vendor or system.”

Source: RevenueBase Database · checked Sep 27, 2026
13Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 27, 202611-506 contacts →

Strong evidence

“Confident AI an AI quality platform and is the easiest way for any organization to build reliable AI.”

Source: RevenueBase Database · checked Sep 27, 2026
14Strong evidenceSeattle, WA, United StatesHQ checked Sep 27, 20261-104 contacts →

Strong evidence

“FixturFab envisions hardware testing at the speed of software, empowering design teams with AI-driven test plans and custom equipment for PCBA testing from prototype to production.”

Source: RevenueBase Database · checked Sep 27, 2026
15Strong evidenceSan Francisco, United StatesHQ checked Sep 27, 20261-103 contacts →

Strong evidence

“A collaborative AI observability platform.”

Source: RevenueBase Database · checked Sep 27, 2026
16Partial evidenceCambridge, MA, United StatesHQ checked Sep 27, 20261-102 contacts →

Partial evidence

“Sensepoint is a new kind of Gen3 AI that assesses the warranted confidence of your existing Gen2 AI/ML applications and can formulate and execute plans to improve them in…”

Source: RevenueBase Database · checked Sep 27, 2026
17Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 27, 20261-102 contacts →

Partial evidence

“We enable AI at scale.”

Source: RevenueBase Database · checked Sep 27, 2026
18Partial evidenceCharlotte, NC, United StatesHQ checked Sep 27, 20261-102 contacts →

Partial evidence

“The Rehearsal Studio for AI Agents”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 18 of 67 AI testing and evaluation platforms based in the United States

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AI testing and evaluation platforms based in the United States at a glance

As of Sep 27, 2026
11.0%Verified-email coverage
54.0Average contacts per company
1-10Median size (employees)
28.4%Largest-city concentration · San Francisco
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
45
11-50
14
51-200
6
201-500
2

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 67 companies.

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 testing and 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.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “AI testing and 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 testing and 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 testing and evaluation platforms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 398 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.

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 testing and 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 testing and evaluation platforms are there based in the United States?

RevenueBase identified 67 AI testing and evaluation platforms headquartered in the United States 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?

Kaggle, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most AI testing and evaluation platforms?

San Francisco leads with 19 headquartered companies, followed by New York (4) and Seattle (3).

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 398 verified decision-maker contacts tracked across these 67 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.