The Problem: ChatGPT Is Not a Vault
ChatGPT is impressive. It answers questions, summarizes texts, and helps with analysis. According to Bitkom, employees in 42% of German companies already use private AI tools at work — often without their employer's knowledge. Many of them with company data: revenue figures, customer lists, internal reports.
But what actually happens to that data?
In short: it leaves your company.
With the free version and ChatGPT Plus, inputs are used by default to train AI models. According to a Nightfall AI analysis, 4.7% of employees enter confidential company data into ChatGPT. OpenAI stores conversations — deleted chats are only removed after 30 days. And even with ChatGPT Enterprise, where OpenAI doesn't use inputs for training, your data leaves your network and is processed on US servers.
What Can Happen in the Worst Case?
The risks aren't theoretical. In April 2023, Samsung banned its employees from using ChatGPT — after engineers had entered confidential source code and meeting notes. Samsung confirmed: the data is irrevocably stored on OpenAI servers.
Samsung isn't an isolated case. Apple, Amazon, Verizon, and Spotify have also restricted or banned ChatGPT internally — over concerns about source code, customer data, and intellectual property.
The concrete risks:
- Data leaks through hallucinations: LLMs can embed fragments from training data into responses to other users
- Compliance violations: Entering personal data into ChatGPT can violate GDPR
- Loss of control: Once entered, you have no control over your data
- No guarantee of accuracy: ChatGPT "guesses" — making business decisions based on wrong numbers can be costly
- High costs in case of a breach: According to IBM, a data breach in Germany costs an average of €3.87 million. Shadow AI causes additional costs of approximately €600,000 per incident
Is ChatGPT GDPR Compliant?
It's complicated. The Italian data protection authority temporarily banned ChatGPT in 2023 — and in December 2024 imposed a €15 million fine on OpenAI (lacking legal basis, insufficient transparency). German data protection authorities in Bavaria and Hamburg are actively reviewing GDPR compliance.
ChatGPT Enterprise and the API offer more privacy (no training on inputs, SOC 2 compliance). But even here: your data is processed on US servers. For European companies with strict compliance requirements, that's often a dealbreaker.
Starting August 2026, the situation tightens further: with the EU AI Act, fines for uncontrolled AI usage rise to up to €35 million.
The core question is: Do your data even need to be sent to an external AI?
The Alternative: Bring AI to Your Data — Not the Other Way Around
There's a fundamentally different approach: instead of sending your data to an AI, bring the AI to your data.
Here's how it works with oneAgent:
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Data stays where it is. oneAgent connects directly to your data sources — ERP, CRM, data warehouse, Shopify, Salesforce, or any of 550+ supported systems. Your data never leaves your network.
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Questions in natural language. Ask questions like "How did revenue in the North region develop compared to last year?" — in plain language, no SQL needed.
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Guaranteed correct answers. This is the critical difference from ChatGPT: oneAgent doesn't guess. An automatic verification layer checks every answer against your actual data and business rules — before you see it.
ChatGPT vs. oneAgent: Direct Comparison
| ChatGPT (Enterprise) | oneAgent | |
|---|---|---|
| Where is your data? | US servers (OpenAI) | Your network / Frankfurt |
| GDPR compliant? | Limited | Fully |
| On-premise possible? | No | Yes |
| Answers verified? | No (hallucinations possible) | Yes (automatic verification layer) |
| Connect data sources? | Manual upload needed | 550+ connectors, automatic |
| Cost | $25/user/month | €25/user/month |
| Free trial | No | 14 days |
Who Is oneAgent the Right Choice For?
oneAgent is particularly relevant if you:
- Want to analyze company data without sharing it with third parties
- Must comply with GDPR requirements
- Need reliable numbers — no AI guesswork
- Don't have a data engineering team writing SQL queries
- Need fast answers to business questions — in seconds, not days
Conclusion: You Don't Need to Send Your Data to ChatGPT
ChatGPT is a great tool — for writing, brainstorming, and general questions. But for analyzing company data, it's the wrong tool.
Not because it's bad. But because it was built for a different purpose.
If you want to query your business data via chat — securely, GDPR-compliant, and with guaranteed correct answers — then try oneAgent. 14 days free, no credit card required.