Does Knock2 use OpenAI?
Yes
We hold strong evidence for this.
- The company names it in its own subprocessor list, a statement that this vendor handles its customers' data.
How we know
About Knock2
Knock2 identifies anonymous visitors to a website and resolves them to a person and company, then routes them to CRM and Slack. It serves sales, marketing, revenue operations and GTM teams, as well as platforms and agencies.
Summarized from its homepage on 4 Nov 2026.
What else Knock2 uses
Knock2 has evidence for 17 vendors. The strongest:
Intercom
Axiom
Firebase
Heroku
Resend
Sentry
Stripe
Supabase
Cloudflare
Other companies using OpenAI
Check any company's vendors in seconds
See Knock2's full stack with a source for every vendor, and ask the same question about any company 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