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Technologies / Anthropic / ConvertKit

Companies using Anthropic and ConvertKit

7 companies in our data have public evidence for both Anthropic and ConvertKit, and 5 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
under 1%of Anthropic users
64%of ConvertKit users
5name 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

CompanyAnthropicConvertKit
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
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
Castoscastos.comCastos is a podcast hosting platform that publishes shows to Apple Podcasts, Spotify, and other directories, with private podcasting, monetization, and analytics built in.Media and entertainment
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

Anthropic

AI and LLM providers

Anthropic is a public benefit corporation dedicated to securing the benefits of AI and mitigating its risks. It is used for the responsible development and maintenance of advanced AI for the long-term benefit of humanity.

Summarized from anthropic.com on 8 Nov 2026.

under 1% of the 2,910 companies we see using Anthropic also show the other.

All 2,910 companies using Anthropic2,239 name it as a subprocessorMore in AI and LLM providers

ConvertKit

Email and communications

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

All 11 companies using ConvertKit8 name it as a subprocessorMore in Email and communications

Other pairs

Companies with their own evidence for both.

More with Anthropic

Cloudflare2,897companiesGoogle Workspace2,127companiesOpenAI1,993companiesAmazon Web Services1,556companiesStripe1,524companiesGoogle1,411companies

More with ConvertKit

Cloudflare11companiesGoogle Workspace10companiesStripe10companiesGoogle Analytics8companiesOpenAI7companiesNext.js6companies

Questions

How many companies use both Anthropic and ConvertKit?

7 companies in StrataDB's data have public evidence for both, and 5 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 Anthropic and ConvertKit?

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

How does StrataDB know a company uses Anthropic and ConvertKit?

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 Anthropic and ConvertKit

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