ChatGPT Enterprise alternatives for confidential work
ChatGPT Enterprise can be the right tool when a signed BAA and contract terms match your obligation. Private self-hosted AI is the alternative when the requirement is to remove data transfer entirely — not just restrict it by policy.
Choose IlluminAI if
- Your obligation requires data to stay on infrastructure you own
- You want open-weight models with no third-party inference path
- You need custom workflows on your documents, not a general chat UI
- You want one accountable builder, not a platform subscription
Choose ChatGPT Enterprise if
- Your firm can execute OpenAI's enterprise agreement and BAA process
- Contractual restrictions on training/retention satisfy your counsel
- You want frontier-model capability without running your own stack
- Per-seat SaaS economics work for your size and usage
What ChatGPT Enterprise actually provides
OpenAI offers HIPAA-eligible enterprise tiers for customers who sign a Business Associate Agreement (BAA). Standard ChatGPT (Free, Plus, Team, and Business without enterprise terms) is not covered and should not receive PHI or privileged material. Enterprise tiers restrict training on customer data by contract — but prompts and documents still go to OpenAI's infrastructure for inference.
Where private deployment differs
Self-hosted or private-cloud deployment runs open-weight models on infrastructure the client owns. Inference happens inside that environment. There is no API call to a vendor cloud for each prompt — which is the architectural difference compliance teams care about when they ask "where does the data go?"
| Decision factor | ChatGPT Enterprise | IlluminAI (private deployment) |
|---|---|---|
| Where inference runs | OpenAI-managed cloud | Your VPS, private cloud, or on-prem |
| Data transfer | Prompts/docs sent to vendor for processing | Stays in your environment |
| HIPAA path | BAA available on enterprise tiers (sales-managed) | Architecture removes external processor for inference |
| Model updates | Vendor-controlled | Included in managed engagement |
| Who builds it | Internal IT + OpenAI onboarding | Done-for-you: one accountable builder |
| Typical economics | Per-seat subscription (vendor pricing) | Fixed-scope build + infrastructure you pay directly |
Legal and healthcare firms
Firms handling PHI or privilege often evaluate both paths: a HIPAA-eligible SaaS with a BAA, or private deployment with no external inference. The right answer depends on what your counsel and clients require — not marketing claims from either side. IlluminAI's consult is designed to map that honestly, including when enterprise cloud is sufficient.
Last verified: 2026-09-18 · Sources: OpenAI enterprise privacy documentation; published legal-industry guidance on standard vs enterprise ChatGPT tiers.