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Technologies / Extend / OpenAI

Companies using Extend and OpenAI

9 companies in our data have public evidence for both Extend and OpenAI, and 8 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.

9companies use both
100%of Extend users
under 1%of OpenAI users
8name both as subprocessors

Companies using one are 7.1 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

CompanyExtendOpenAI
Hollyhollygov.comHolly provides an AI platform for government classification and compensation work, including job specification drafting, similarity scoring, and review workflows.AI and machine learningGovernment and public sector
Ironcladironcladapp.comIronclad provides AI contract lifecycle management software for creating, reviewing, signing, storing, and analyzing contracts.Legal
Modamoda.appDesign and creative
Ocrolusocrolus.comOcrolus provides an AI workflow and analytics platform that analyzes financial documents such as bank statements, pay stubs and tax forms, including fraud detection.AI and machine learningData and analytics
Parabolaparabola.ioProwork by Parabola automates reconciliations, audits, and reports for finance and operations teams.Finance and accounting softwareLogistics and supply chain
sherpasherpahq.aisherpa provides an AI operating system for managing external workforces, running engagements from intake and sourcing through contracting, onboarding, and payment.AI and machine learningHR and recruiting
Tesoriotesorio.comTesorio provides AI agents that handle the order-to-cash lifecycle, including collections, cash application, forecasting, and supplier portals.Finance and accounting software
Waystationwaystationai.comWaystation connects to a company's email inbox and automatically extracts supplier documents and data such as CoAs, spec sheets, certifications, quotes, and pricing.AI and machine learningFood and restaurants
Atlasatlaswork.aiAtlas provides AI-powered contract workflow software and a managed contracts department that handles drafting, approvals, signing, and filing.Legal

The two technologies

Extend is a set of document processing APIs. It is used to parse, extract, split, and verify documents.

Summarized from extend.ai on 8 Nov 2026.

100% of the 9 companies we see using Extend also show the other.

All 9 companies using Extend8 name it as a subprocessor

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 3,285 companies we see using OpenAI also show the other.

All 3,285 companies using OpenAI2,522 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 learning4HR and recruiting2Legal2Finance and accounting software2Logistics and supply chain2

Other pairs

Companies with their own evidence for both.

More with Extend

Anthropic9companiesCloudflare9companiesGoogle Workspace8companiesGoogle Analytics6companies

More with OpenAI

Cloudflare3,284companiesGoogle Workspace2,478companiesAnthropic1,997companiesAmazon Web Services1,891companiesStripe1,647companiesGoogle1,550companies

Questions

How many companies use both Extend and OpenAI?

9 companies in StrataDB's data have public evidence for both, and 8 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 Extend and OpenAI?

Holly, Ironclad, Moda, Ocrolus and Parabola, and 4 more companies. Each one links to the evidence behind it.

How does StrataDB know a company uses Extend 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 Extend 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