Companies using ConvertKit and OpenAI

7 companies in our data have public evidence for both ConvertKit and OpenAI, and 6 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 ConvertKit users

under 1%of OpenAI users

6name 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	ConvertKit	OpenAI
ChatPRDchatprd.aiChatPRD is an AI product manager tool that helps teams write product documents, review them, and turn specs into prototypes.Productivity and collaboration
DoiTdoit.comDoit provides a FinOps platform that allocates cloud spend to the customers, teams and features that used it, without tags.Cloud and infrastructure
Helplyhelply.comHelply provides an AI-native customer support platform with AI agents that investigate, resolve, and take action on support work.AI and machine learning Customer support
Relay Commercerelaycommerce.ioRelay provides an ecosystem of Shopify apps and expertise for e-commerce, covering popups, email/SMS, package protection, subscriptions, and predictive flows.E-commerce
SELECTselect.devSELECT provides cost visibility, monitoring, and automated savings for Snowflake, Databricks, and BigQuery.Data and analytics
Zedzed.devZed Industries develops Zed, an open-source IDE, and Delta, a multiplayer coding environment with agents.Developer tools
Thought Leadership Appthoughtleadership.appThought Leadership App is an AI tool that writes LinkedIn posts in a user's own voice, based on their goals and audience.AI and machine learning

The two technologies

ConvertKit

Email and communications

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

All 11 companies using ConvertKit 8 name it as a subprocessor More 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 3,264 companies we see using OpenAI also show the other.

All 3,264 companies using OpenAI 2,507 name it as a subprocessor More in AI and LLM providers

Other pairs

Companies with their own evidence for both.

More with ConvertKit

Cloudflare11companies

Google Workspace10companies

Stripe10companies

Google Analytics8companies

Anthropic7companies

Next.js6companies

More with OpenAI

Cloudflare3,266companies

Google Workspace2,462companies

Anthropic1,985companies

Amazon Web Services1,885companies

Stripe1,637companies

Google1,540companies

Questions

How many companies use both ConvertKit and OpenAI?

7 companies in StrataDB's data have public evidence for both, and 6 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 ConvertKit and OpenAI?

ChatPRD, DoiT, Helply, Relay Commerce and SELECT, and 2 more companies. Each one links to the evidence behind it.

How does StrataDB know a company uses ConvertKit 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 ConvertKit 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