Does OpenAI Train on My API Data?
No. OpenAI's default policy is that data submitted through the API is not used to train its models. However, that default only holds if you haven't opted in to sharing, and it doesn't mean your data never leaves your infrastructure: it still travels to and is processed on OpenAI's servers, which matters for HIPAA and GDPR compliance.
Why SMBs get this wrong
Most people conflate the ChatGPT consumer product with the OpenAI API. They're not the same. ChatGPT's free and Plus tiers do use conversations to improve models unless you manually opt out in settings. The API operates under a separate terms of service with a different default.
The confusion creates two real problems. Companies assume the API is completely private, skip proper data governance, and end up with PHI or PII flowing through a third-party server without a signed BAA. Or they assume it's all the same as ChatGPT, avoid the API entirely, and miss a legitimate tool. Both assumptions cost money.
What OpenAI's policy actually says
Under OpenAI's API data usage policy (updated March 2023), API inputs and outputs are not used to train or improve models by default. If you submit data through the API, it may be retained for up to 30 days for abuse monitoring, then deleted. You can request zero data retention for eligible endpoints by contacting OpenAI's sales team, though that requires a qualifying agreement.
The critical word is 'processed.' Even without training, your data is transmitted to and handled on OpenAI's infrastructure. That transmission is enough to trigger compliance obligations. If you're in healthcare, OpenAI does offer a Business Associate Agreement, but you have to request it, it's not automatic, and not all endpoints qualify. Without a signed BAA, using the API with protected health information is a HIPAA violation regardless of training policy.
For finance and legal, the same logic applies to GDPR and state privacy laws like CCPA. The question isn't only whether OpenAI trains on your data. It's whether sending data to any third-party server at all is acceptable under your compliance obligations. For many regulated SMBs, the answer is no.
When the answer changes
If you or anyone on your team uses ChatGPT directly (not the API) and hasn't disabled the 'Improve the model for everyone' setting, that data is fair game for training. People paste customer data, patient summaries, and financial reports into ChatGPT every day thinking it's the same as the API. It's not.
If you're using a third-party SaaS tool that runs on top of OpenAI's API, your data governance depends on that vendor's own agreement with OpenAI, not yours. You have no direct contractual relationship with OpenAI in that scenario, and the vendor's BAA (if they even have one) is what controls your exposure.
How we handle this at Usmart
For clients in healthcare, finance, and any other regulated vertical, we don't build wrappers around public API endpoints. We deploy private LLM infrastructure using models like Llama 3.1, hosted in environments the client controls, so the question of whether a third party trains on your data becomes irrelevant. Your data doesn't leave your environment.
For clients where a public API is genuinely appropriate, we review the full data flow before writing a line of code, confirm whether a BAA is needed and obtainable, and document the decision. We sign BAAs for HIPAA-regulated work as part of our standard engagement. If OpenAI's current terms don't support your compliance posture, we'll tell you that directly before you build anything on it.
Ready to see it working for your business?
Book a free 30-minute strategy call. We will scope your use case and give you honest numbers on timeline, cost, and ROI.