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Technologies / Anthropic Claude / OpenAI

Companies using Anthropic Claude and OpenAI

18 companies in our data have public evidence for both Anthropic Claude and OpenAI, and 10 name both in their own subprocessor list. Each company below links to the source for every claim. Our coverage is partial, so this is not everyone.

18companies use both
43%of Anthropic Claude users
1%of OpenAI users
10name both as subprocessors

Companies using one are 3.1 times as likely as the average company in our data to show evidence of the other.

The companies

Strongest evidence first: a company naming both in its own subprocessor list comes before one seen on its website or in job postings.

Subprocessor listPrivacy policyWebsiteJob postings

CompanyAnthropic ClaudeOpenAI
Amelia Vibeameliavibe.comAmelia turns users' rough ideas and notes into LinkedIn posts.
AmpPilotamppilot.comAmpPilot is an AI marketing platform that coordinates SEO, content, social, and paid campaigns around set goals, budgets, and approvals.AI and machine learningMarketing
BrightLocalbrightlocal.comBrightLocal provides local SEO tools and services for tracking rankings, managing business listings, and monitoring online reviews.Marketing
Corsearchcorsearch.comCorsearch provides trademark search and screening, brand protection, and content protection services that help companies monitor and address threats to their brands and intellectual property.AI and machine learningLegal
Dudaduda.coDuda provides a white-label website builder platform with tools for building sites, SEO, bookings, and eCommerce.Marketing
Prospera AImyprospera.aiProspera AI provides an AI companion called Sophie for financial advisors that turns existing client information into meeting briefs, insights, and draft communications.AI and machine learning
Pendopendo.ioPendo provides product analytics and in-app guidance tools that show what users do, say, and how a product performs.Data and analytics
Quiqquiq.comQuiq provides AI agents, AI assistants, voice AI agents, AI workflows, and a digital contact center platform for customer conversations.AI and machine learningCustomer support
Smartcatsmartcat.comSmartcat provides an AI translation platform for translating content such as websites, files, software, eLearning, and video into other languages.AI and machine learning
WorkBoardAIworkboard.comWorkBoard provides an AI-native strategy execution platform for managing strategy, OKRs, portfolios, initiatives, projects, people, and skills.AI and machine learning
CloudTalkcloudtalk.ioCloudTalk provides a cloud-based business phone system with AI voice agents, an AI dialer, conversation intelligence, messaging, and number management.CommunicationsCustomer support
Eddytoreddytor.comEddytor lets companies edit master data directly in their data lake through a browser-based interface that looks like a spreadsheet.Data and analytics
Runbearrunbear.ioRunbear provides named AI agents that teams can mention in Slack and Teams to draft replies, prep briefs, and log work using the team's knowledge and connected tools.AI and machine learningProductivity and collaboration
Extraordinaryextraordinary.comExtraordinary provides U.S.LegalConsulting and services
Landinghellolanding.comLanding provides furnished apartments for short and long stays across the United States.Travel and hospitality
nxxii.comManufacturing
Pinpin.comPin is a recruiting tool that sources candidates from profiles, sends personalized outreach emails, and books interviews.HR and recruiting
The Drive AIthedrive.aiThe Drive AI is an AI file assistant that reads, organizes, and answers questions across a team's documents.AI and machine learningProductivity and collaboration

The two technologies

Anthropic Claude

AI and LLM providers

43% of the 42 companies we see using Anthropic Claude also show the other.

All 42 companies using Anthropic Claude26 name it as a subprocessorMore in AI and LLM providers

OpenAI

AI and LLM providers

OpenAI is a platform that provides an API for building with OpenAI models. It is used to access models, tools, and services for tasks such as text generation, image generation, audio, and agents.

Summarized from developers.openai.com on 8 Nov 2026.

1% of the 3,304 companies we see using OpenAI also show the other.

All 3,304 companies using OpenAI2,530 name it as a subprocessorMore in AI and LLM providers

Industries

Among the companies above, by our own classification of their homepage.

AI and machine learning8Marketing3Legal2Data and analytics2Customer support2Productivity and collaboration2

Other pairs

Companies with their own evidence for both.

More with Anthropic Claude

Cloudflare42companiesGoogle Workspace29companiesAmazon Web Services24companiesGoogle Tag Manager22companiesGoogle19companiesAnthropic14companies

More with OpenAI

Cloudflare3,282companiesGoogle Workspace2,476companiesAnthropic1,996companiesAmazon Web Services1,888companiesStripe1,647companiesGoogle1,549companies

Questions

How many companies use both Anthropic Claude and OpenAI?

18 companies in StrataDB's data have public evidence for both, and 10 of them name both in their own subprocessor list, the strongest evidence we hold. Our coverage is partial, so the real number is higher.

Which companies use Anthropic Claude and OpenAI?

Amelia Vibe, AmpPilot, BrightLocal, Corsearch and Duda, and 13 more companies. Each one links to the evidence behind it.

How does StrataDB know a company uses Anthropic Claude and OpenAI?

From four kinds of public evidence: subprocessor lists, privacy policies, website code and job postings. Each is kept apart with its source and the date we saw it. A company missing here means we found no evidence, not that it does not use them.

Find every company using Anthropic Claude and OpenAI

See the full list with the source for each company, and run the same lookup for any technology from the API, Claude or your browser.

  • Every company and vendor, with its public source
  • 100 API calls a month, plus MCP and the Chrome extension
  • Work email only. No card, no sales call