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Technologies / GatewayAPI / OpenAI

Companies using GatewayAPI and OpenAI

4 companies in our data have public evidence for both GatewayAPI and OpenAI, and 3 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.

4companies use both
57%of GatewayAPI users
under 1%of OpenAI users
3name both as subprocessors

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

CompanyGatewayAPIOpenAI
Availableavailable.dkAvailable sells and implements Zendesk for businesses and provides related training and courses in customer service.Customer supportConsulting and services
CleanTrackercleantracker.proCleanTracker provides software for planning jobs, managing visits, coordinating staff, and sending invoices for cleaning and facility service companies.
SwiftGuardswiftguard.aiSwiftGuard is an AI receptionist that answers inbound phone calls for plumbing and heating businesses, captures caller details, and books jobs into the user's calendar.AI and machine learning
BilagPilotbilagpilot.noBilagPilot helps accounting firms find booked transactions that lack documentation and collect the missing documents from their clients.Finance and accounting software

The two technologies

GatewayAPI

Email and communications

GatewayAPI is a messaging platform for sending SMS, RCS and email through APIs, with features such as virtual numbers, shortcodes, keywords and number lookup. It is used by businesses to send marketing, transactional and service messages to customers.

Summarized from gatewayapi.com on 9 Nov 2026.

57% of the 7 companies we see using GatewayAPI also show the other.

All 7 companies using GatewayAPI6 name it as a subprocessorMore in Email and communications

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.

under 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

Other pairs

Companies with their own evidence for both.

More with GatewayAPI

Cloudflare7companiesGoogle5companiesGoogle Workspace5companiesNext.js5companiesResend5companiesStripe5companies

More with OpenAI

Cloudflare3,289companiesGoogle Workspace2,481companiesAnthropic1,998companiesAmazon Web Services1,890companiesStripe1,652companiesGoogle1,552companies

Questions

How many companies use both GatewayAPI and OpenAI?

4 companies in StrataDB's data have public evidence for both, and 3 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 GatewayAPI and OpenAI?

Available, CleanTracker, SwiftGuard and BilagPilot. Each one links to the evidence behind it.

How does StrataDB know a company uses GatewayAPI 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 GatewayAPI 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