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ChatGPT in the enterpriseInfrastructure··2 min

How to use ChatGPT inside your company without leaking data to OpenAI

90% of companies have their team using personal ChatGPT with corporate data. Here's how to stand up the secure equivalent in 2 weeks without killing productivity.

Senior AI Infrastructure Implementer

AI Infrastructure Pod

Try this experiment: go to your Slack #general and ask how many people use ChatGPT daily. The honest answer will surprise you. And it will be far above the number of Enterprise licenses you've actually paid for.

The real problem, not the one you hear on LinkedIn

It's not that your team "isn't adopting AI". They're using personal ChatGPT with company data — internal emails, contracts in review, unsigned strategic plans. Every query is potential model training if you're not on a Team/Enterprise plan.

Blocking it with DNS or firewall is useless: they use it from their personal phone. The move is to offer the secure alternative in a form so convenient that going around it isn't worth the bother.

The 3 real options

OptionCost/userSetup timeProsCons
ChatGPT Enterprise~$60/mo1 wkZero training, SSO, adminExpensive at scale, OpenAI lock-in
Claude for Work~$30/mo1 wkCheaper, better at writingEquivalent Anthropic lock-in
Your own gateway (recommended >50 people)~$8-15/mo2-3 wksMulti-model, full control, audit logsRequires initial technical layer

Your own gateway: what's inside

  1. Multi-model router (GPT-4o, Claude, Gemini, Mistral) — the user doesn't pick; the system routes by task
  2. SSO with your IdP (Google, Microsoft Entra, Okta)
  3. Shared cache that saves 30-40% of cost on repeated queries
  4. Audit logs: who, when, which prompt, which answer, what cost
  5. Sensitive-data guardrails (PII, IBAN, credentials) that stop before sending
  6. Per-team quotas + alerts if someone runs hot

What happens when it's done right

Real case (expense-management fintech, 240 employees): they went from 12 Enterprise licenses + 200 users off the radar to their own gateway with 220 active users, $2,000/month all-in vs. the $15,000/month they'd have paid in pure Enterprise. Audit logs satisfy ISO 27001, leak risk: managed.

This is one of the services with most demand for the past 6 months. If you want to see how it gets built custom: /servicios/infraestructura-ia-empresarial.

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How to use ChatGPT inside your company without leaking data to OpenAI · Implementa