Companies using Grok and OpenAI

7 companies in our data have public evidence for both Grok and OpenAI, and 7 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.

7companies use both

64%of Grok users

under 1%of OpenAI users

7name both as subprocessors

Companies using one are 4.6 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

Company	Grok	OpenAI
Blacksmithblacksmith.shBlacksmith provides a drop-in replacement for GitHub Actions runners that runs CI jobs on faster hardware with co-located caching.Developer tools
Bubbabubba.aiBubba.ai provides an AI AutoPilot for fleets that finds, negotiates and books loads.AI and machine learning Logistics and supply chain
Chatbasechatbase.coChatbase provides AI agents that handle customer service, sales, and product guidance across chat, email, and voice.AI and machine learning Customer support
chatbase.fyi
Copia Connectcopiaconnect.aiCopia Connect provides fund operations software with AI that extracts data from documents and flags errors, plus waterfall calculations for fund structures.Finance and accounting software
Bluejaygetbluejay.aiBluejay provides a platform to test, monitor, and improve voice and chat AI agents through simulations and observability.AI and machine learning
GTWYgtwy.aiGTWY provides embedded agent infrastructure that lets software platforms offer their own users a builder for AI agents, with isolation, white-labeling, and per-customer usage metering.AI and machine learning

The two technologies

Grok

AI and LLM providers

Grok is a chat service. It is used to send messages and get responses.

Summarized from grok.com on 9 Nov 2026.

64% of the 11 companies we see using Grok also show the other.

All 11 companies using Grok 9 name it as a subprocessor More 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.

under 1% of the 3,355 companies we see using OpenAI also show the other.

All 3,355 companies using OpenAI 2,571 name it as a subprocessor More in AI and LLM providers

Other pairs

Companies with their own evidence for both.

More with Grok

Anthropic10companies

Cloudflare10companies

Google Workspace8companies

Google Gemini6companies

Mistral AI6companies

Next.js6companies

More with OpenAI

Cloudflare3,339companies

Google Workspace2,515companies

Anthropic2,031companies

Amazon Web Services1,917companies

Stripe1,686companies

Google1,582companies

Questions

How many companies use both Grok and OpenAI?

7 companies in StrataDB's data have public evidence for both, and 7 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 Grok and OpenAI?

Blacksmith, Bubba, Chatbase, chatbase.fyi and Copia Connect, and 2 more companies. Each one links to the evidence behind it.

How does StrataDB know a company uses Grok 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 Grok 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.

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