How these US AI development companies were chosen

This page explains how the nineteen firms in this guide were chosen and how each fact was checked. Every page was opened on 21 October 2026 and saved, and each quote was checked against the saved copy. The list order is fixed: Reveneau first, Fluxon second, then the product studios, the AI-first firms and the large consultancies. The order inside each group carries no ranking. No firm receives a score. No page compares named firms on speed, price or quality.

The three tests

A firm entered the list only if it passed all three tests.

1. It names a US office. The firm's own page, its annual report to the Securities and Exchange Commission (SEC), or an independent source had to name an office in a US city. A street address helped but was not required. A firm whose pages named no US city was left out.

2. It describes building AI software for other companies. The firm's own pages had to describe AI work that it builds for clients: agents, systems that answer from a company's documents, models, or products with AI features. A firm that only advises on AI, with no building, would have failed this test.

3. It sells that work as a service. A company whose main business is selling its own software product was left out, even when it also offers consulting. Fractal and Quantiphi sell products of their own and stayed in, because their pages lead with services built for clients.

Thirteen of the seventeen firms after Reveneau and Fluxon were new to this site's guides. The other four, Fractal, Quantiphi, Artium and Slalom, had been checked for earlier guides, and their pages were opened again on 21 October 2026.

How each firm's kind was decided

Each firm after Reveneau and Fluxon was placed in one of three kinds from what its own pages describe. A product studio designs and builds a product for a client with one team. An AI-first firm puts AI, data and models at the centre of what it sells. A large consultancy sells strategy, systems work and many staff, with AI as one practice. Quansight was the hardest firm to place: much of its work is open-source scientific computing, with AI engineering as one practice, and it was placed with the AI-first firms because its AI engineering page describes model training, tuning and deployment.

Reveneau and Fluxon are given no kind label. Each is described by what it says about its own work, and the reader can judge where each fits. Fluxon's entry draws on its own homepage [2], Forbes and Stripe's partner directory.

The kinds of source, and how each is labelled

Label on the page	What it means	Example in this guide
The firm's own account	The firm's website, press release or its own text in a directory	Think Company's "~$50K"; Blend360's "1000+ Employees"
SEC filing	The annual report a US public company files with the SEC	Booz Allen's staff count on 31 March 2026 [4]
Independent outlet	A news source with no stake in the claim	Consulting.us on AlixPartners buying Artium [8]; Outlook Money on Fractal's listing [9]
Trade press repeating a company	A news item that reports the company's own announcement	Intelligence Community News on Booz Allen's 2020 contract [5]
Party to a deal	An announcement by one side of the deal it describes	Anthropic on Cognizant [6] and on Accenture [7]
Partner award	A prize from a platform company to firms that build on its product	Databricks' 2024 partner awards [3]
Directory listing	A list run by a platform company. The partner writes its own text, and in Anthropic's list Anthropic sets the tier	Anthropic's partner directory [1]; Stripe's partner directory, where Fluxon supplied its own address

A filing is still the company's own statement. It is made formally to a regulator, and this guide uses it as the main source for a public company's head office and staff count. Claims inside a filing, such as Booz Allen's description of itself as "the federal government’s largest AI provider", stay attributed to the company.

A partner award gets its own label because the company giving it has a business interest. Databricks earns money when its partners sell its platform, so its award shows that Databricks values the firm as a partner. Each page that uses a Databricks award says so.

An announcement by one side of a deal is labelled the same way. Anthropic's pages on Cognizant and Accenture describe deals Anthropic is part of. Computerworld's report on Cognizant, which cites The Wall Street Journal, is an independent outlet [13].

How Anthropic's directory was read

Anthropic's Claude Partner Network directory, at partnerhub.claude.com, was read on 21 October 2026 [1]. Its full partner list is built into the page, and that list was read in full: 321 entries, of which 256 are at the Select tier, 40 at Preferred, 16 at Global Premier and 9 have no tier. Anthropic sets the tier. The one-line description beside each name, and the office regions each partner picks, are written by the partner, so this guide treats them as the firm's own account.

Each firm was searched for by name. Reveneau was searched for on 20 October 2026 and was not listed. Fluxon, Atomic Object, 8th Light, Viget, Think Company, MojoTech, Quansight, Booz Allen Hamilton and West Monroe were not listed on 21 October 2026. A search for "think" found Think41 and Thinkia, two different firms, and no Think Company. Searches of the same list found Blend360, Aimpoint Digital, Fractal, Quantiphi, Artium AI, EPAM Systems, Cognizant, Accenture and Slalom Consulting. Finding those nine peers in the same list shows that the search worked, so a missing name means the firm was not listed that day.

Firms with no independent source

For six firms, no independent source was opened: Atomic Object, 8th Light, Viget, Think Company, MojoTech and Quansight. For Atomic Object, the pages of B Lab, which certifies B Corps, and of Crain's Grand Rapids refused automated requests, and OpenCorporates, a register of company records, asked for a human check. Wikipedia gives a staff count for Atomic Object [10], but Wikipedia takes that count from Atomic's own team page. Each of the six entries says once that its facts come from the firm's own pages.

When two counts disagree

Four firms have two staff counts from two sources. Fluxon has 200 employees on Forbes's page, with figures as of March 2026 [14], and "300+ builders" on its own careers page [15]. Blend360 shows "1000+ Employees" on its site and "1,500+ people" in its own directory text. Accenture's filing gives 814,000 on 31 August 2026, marked as approximate, and its own directory text gives 779,000. Atomic Object's press release from February 2025 gives 115, and Wikipedia gives 125. In each case this guide gives both counts with their sources and chooses neither.

Claims left out on purpose

Some claims were read and left out. Atomic Object's AI page calls it "the highest-rated custom software consultancy on Earth" on Clutch, a review site [11]. That is a ranking, and this guide gives no firm a ranking or a score. MojoTech's count of projects it says it has shipped, Atomic Object's count of clients, and Booz Allen's count of active AI projects are each the firm's own count of its work, and none was needed to describe what the firm offers. Viget's staff count on Built In, a site whose company profiles are written by the companies, was left out as self-declared.

Some claims were kept, with their source named. Blend360's "Recognized by Anthropic" is on its homepage [12], and Anthropic's directory shows Blend360 at the Select tier. Quansight's claim to be one of the largest contributors to PyTorch is on its about page [17], and PyTorch's records were not checked. Quantiphi's 21 Google Cloud Partner of the Year awards are in its own press release [18], and Google's 2026 winners page loaded with no names. 8th Light's "Claude Certified" did not match any entry in Anthropic's directory.

Firms checked and left out

Firm	Why it was left out
thoughtbot	Sells AI and machine learning work, but its pages name no US office
Test Double	Fully remote across the United States and Canada, with no office city
Very Good Ventures	Listed by Anthropic at the Select tier, but no US office or address on its pages
Fueled	Lists AI services, but gives no office address, only a New York phone number
Gorilla Logic	Listed by Anthropic at the Select tier, but no office city on the pages opened
Sidebench	A healthcare product studio with AI work, but no office address on the pages opened
Detroit Labs	A Detroit address, but no AI wording on its homepage or about page
Praxent	Listed by Anthropic at the Select tier, but no current office address on the pages opened
Mission Cloud	Mainly cloud management on Amazon Web Services, with AI as one line
Civis Analytics	Sells its own platform; a product company
Lovelytics	A data and AI consultancy, but no office location on the pages opened
Koombea	Its own website data gives Naples, Florida, outside the Miami metro area
WillowTree	Its site now sends visitors to telusdigital.com, which refused the request
Big Nerd Ranch and Postlight	One site did not answer and the other refused the request
AnswerRocket	Mixes its own product with consulting; not checked further
IBM Consulting, Deloitte, Capgemini, Globant	Not checked for lack of time; five large consultancies were already covered

What could not be checked

These items are stated on the pages where they matter. The B Lab and Crain's pages on Atomic Object refused requests. Two articles on Blend360's investment, from Citybiz and ChannelE2E, refused requests. EPAM's own website refused automated requests, so its facts come from its annual report. Google Cloud's 2026 Partner of the Year page showed no winners' names. The Census Bureau's survey download page returned 38 bytes of text, so no survey figure newer than the May 2026 report was read. No founding year was found for Quansight, Fractal, West Monroe, Cognizant, Accenture, Booz Allen or Slalom on the pages opened. And no independent source confirmed any client that any firm names.

Wages and metro areas

Wage figures come from the US Bureau of Labor Statistics, read through the Bureau's public data service for software developers in May 2025, with the series code for each figure in the source list [16]. City counts follow the Census Bureau's 2023 list of metro areas. AI development companies outside the Bay Area explains which towns count as their own metro area.

How to check any firm yourself

You can repeat every check on this page. Open the firm's own office page and read the address. For a public company, find its Form 10-K at the SEC. Search Anthropic's directory for the firm's name. Look for a news report from an outlet with no stake in the firm. Then call a client the firm names and ask what it built. Reveneau's own account of how it works is on its AI development service page, and the full list gives every firm's entry.