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Technologies / LlamaIndex / OpenAI

Companies using LlamaIndex and OpenAI

15 companies in our data have public evidence for both LlamaIndex and OpenAI, and 12 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.

15companies use both
71%of LlamaIndex users
under 1%of OpenAI users
12name both as subprocessors

Companies using one are 5.1 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

CompanyLlamaIndexOpenAI
BlackMountainblackmountain.ioAI and machine learningProductivity and collaboration
Certacerta.aiCerta provides an AI-native platform for screening, managing and monitoring third-party risk through orchestration.Compliance and risk
Contrackocontracko.comContracko is an AI contract management platform that reviews contracts for risks and obligations, extracts key data, and tracks deadlines.AI and machine learningLegal
Catoget-cato.comCato provides an AI platform for managing public tender processes, from finding and analyzing tender documents to preparing and submitting offers.AI and machine learningGovernment and public sector
Klaris AIklaris.aiKlaris provides an AI platform that reviews medical device technical documentation against regulatory requirements and flags gaps with remediation guidance.Compliance and risk
Kogniflowkogniflow.comKogniflow uses AI to find accounting errors and unusual entries in a company's accounts.AI and machine learningFinance and accounting software
lovable.dev
n8nn8n.ion8n is a platform for building AI agents and workflows with a visual builder and code.AI and machine learningDeveloper tools
NEXT AInextapp.coNEXT AI builds a persistent customer memory from every customer interaction and puts it to work in marketing, product, and CX workflows.AI and machine learningCustomer support
Spendflospendflo.comSpendflo provides an AI workforce that supports procurement and finance processes, from sourcing and contracting to purchasing, invoices and payment workflows.Finance and accounting software
Relytryrely.aiRely provides diligence automation for multifamily properties that ingests property documents and turns them into source-backed audits, tracked RFIs, and AI-powered workflows.Compliance and riskReal estate
Verinodeverinode.aiVerinode is an independent data trust for the restoration industry that holds a business's data securely and benchmarks it against peer operators.Data and analytics
Wellwellapp.aiWell is a contact in messaging apps like WhatsApp, Claude, and ChatGPT that handles invoices, receipts, reminders, and renewals.Finance and accounting software
donnerstag.aiAI and machine learningFinance and accounting software
SeedForgeseedforge.comSeedForge provides a private profile where founders upload their deck and documents for investors to follow.

The two technologies

LlamaIndex is an applied AI lab building frontier models for enterprise-grade document parsing and extraction. It is used to turn documents into AI-ready context for document automation.

Summarized from llamaindex.ai on 8 Nov 2026.

71% of the 21 companies we see using LlamaIndex also show the other.

All 21 companies using LlamaIndex18 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 3,304 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 learning7Finance and accounting software4Compliance and risk3

Other pairs

Companies with their own evidence for both.

More with LlamaIndex

Cloudflare21companiesGoogle Workspace17companiesAnthropic14companiesAmazon Web Services11companiesGoogle10companiesGoogle Tag Manager10companies

More with OpenAI

Cloudflare3,285companiesGoogle Workspace2,478companiesAnthropic1,997companiesAmazon Web Services1,889companiesStripe1,650companiesGoogle1,551companies

Questions

How many companies use both LlamaIndex and OpenAI?

15 companies in StrataDB's data have public evidence for both, and 12 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 LlamaIndex and OpenAI?

BlackMountain, Certa, Contracko, Cato and Klaris AI, and 10 more companies. Each one links to the evidence behind it.

How does StrataDB know a company uses LlamaIndex 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 LlamaIndex 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
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