What else does Callback use?

GitHub, Amazon Web Services, Anthropic, Cloudflare Dashboard and Google Cloud, among 11 vendors we hold evidence for.

Which other companies use OpenAI?

10Web, 12ui, 15Five, 1K4.AI and 1mind AI, among 3,342 companies with public evidence.

Companies / Callback / OpenAI

Does Callback use OpenAI?

Q: Does Callback use OpenAI?

Yes. We hold strong evidence for this. Evidence: Subprocessor list.

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

Subprocessor listProcesses data for the company11 Nov 2026Source

About Callback

Callback provides a model harness for orchestrating complex operational workflows. It serves enterprises in financial institutions, logistics, manufacturing, oil and gas, developer tools, healthcare, and e-commerce.

Summarized from its homepage on 4 Nov 2026.

What else Callback uses

Callback has evidence for 11 vendors. The strongest:

GitHub Amazon Web Services Anthropic Cloudflare Dashboard Google Cloud Google Analytics Cloudflare Google Workspace Stripe

See the full Callback tech stack

Other companies using OpenAI

10Web10web.io

12ui12ui.com

15Five15five.com

1K4.AI

1mind AI1mind.com

24/7 Software247software.com

360REV360rev.com

365agents365agents.com

All 3,342 companies using OpenAI

Check any company's vendors in seconds

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