Does TierZero 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.
- The company's privacy policy names it as a processor, controller or partner.
How we know
About TierZero
TierZero provides AI production agents that investigate incidents, triage alerts, and answer internal engineering questions. It serves engineering teams.
Summarized from its homepage on 6 Nov 2026.
What else TierZero uses
TierZero has evidence for 19 vendors. The strongest:
Anthropic
Amazon Bedrock
Amazon Web Services
Amplitude
Databricks
Datadog
E2B
LangChain
Modal
Other companies using OpenAI
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- 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