Everyone's asking. Nobody's answering correctly.
Claude or ChatGPT?
Search for it and you'll find hundreds of articles comparing response quality, creativity, and coding ability of the two models. Benchmarks. Rankings. Point scores.
That's not what Norwegian business leaders need to know.
What you actually need to know is: which solution gives you more control? What happens to your data? Who has access? And which one meets the requirements you're already subject to as a Norwegian business?
That's a different conversation. And that's the conversation this article is about.
What's the difference between Claude and ChatGPT?
On the surface they look similar. Both are large language models. Both can write, analyse, summarise, and answer questions. Both have free and paid tiers. Both have API access for businesses that want to build custom solutions.
But behind the interface there are significant differences – particularly in three dimensions that are critical for Norwegian SMBs: data handling, admin controls, and security philosophy.
Data handling and GDPR
This is the most important difference for Norwegian businesses.
Claude (Anthropic):
- API customers and enterprise customers: no training on shared data. By default.
- Log retention: 7 days for API calls, configurable for enterprise.
- Data Processing Agreement (DPA) is available for paid plans – a requirement under GDPR Article 28.
- Anthropic holds ISO 42001 certification (international standard for AI management systems).
ChatGPT (OpenAI):
- For ChatGPT Free and Plus: data can be used for model training unless you manually disable it in settings.
- ChatGPT Teams and Enterprise: data is not used for training. DPA is available.
- API: no training, but customers must ensure personal data isn't sent without a DPA in place.
What does this mean for you?
If employees use the free versions of these tools without guidelines, personal data can end up in the models' training data. That's a GDPR problem. Not hypothetical — actual.
For businesses that want to use AI safely, the solution is either paid enterprise versions with a DPA, or an internal AI policy that defines what employees can and cannot enter into publicly available tools.
Admin controls and team management
Claude for Work (Teams/Enterprise):
- Centralised administration via admin panel
- Projects: structured knowledge bases where teams share instructions and documents
- Control over which features employees can use
- SSO integration in enterprise plans
ChatGPT Teams/Enterprise:
- Admin console with team administration
- GPTs: custom models that can be shared within the team
- SSO support
- Integration with Microsoft Azure and Entra ID in enterprise variant
Both have solid admin tools in paid plans. The difference is in the philosophy behind them: Anthropic is built from the ground up with safety as a core principle. OpenAI has largely added security and enterprise features over time.
Security philosophy: Anthropic vs. OpenAI
This is where the two companies differ fundamentally.
Anthropic was founded by former OpenAI employees who left because they believed the company was moving too fast. The safety DNA is embedded in the structure: Constitutional AI (a method for training models with values), Responsible Scaling Policy (binding internal rules for when more powerful models can be released), and a pursuit of understanding what actually happens inside the models.
OpenAI increased its focus on safety in 2025-2026 after a turbulent period with leadership changes and competitive pressure. GPT-4o and o3 models are strong, but the safety philosophy is more pragmatic than principled.
For a Norwegian business, that means in practice: Claude is typically more conservative with sensitive requests and is designed to decline or limit responses that could be misused. This can occasionally feel more cautious than necessary — but it's a deliberate trade-off, not a flaw.
When should you choose Claude – and when ChatGPT?
There's no universal answer. But here's a simple framework:
Claude is the better fit if:
- GDPR and data minimisation are active requirements
- You work with sensitive documents, legal texts, or HR data
- You want to build structured knowledge bases for teams (Claude Projects)
- Safety and predictable behaviour outweigh maximum creativity
ChatGPT is the better fit if:
- You're already deeply integrated with Microsoft 365 and Entra ID
- You want to use custom GPTs from the OpenAI marketplace
- You work on creative tasks where rawness and variety are valued
- Your team is technical and wants API flexibility with large community resources
In practice, many businesses use both — different tools for different tasks, with clear guidelines for what's used and for what.
The real question
Claude vs. ChatGPT is the wrong question to start with.
The right question is: what do we have in place to use either of them safely?
Do you have an AI policy that defines approved tools and permitted use? Do employees know what they shouldn't type in? Do you have a DPA with the vendors? Has your access management been reviewed?
Without these foundations, both Claude and ChatGPT will disappoint — the same way Microsoft Copilot disappoints businesses that haven't done the foundational work.
The tool choice comes last. Structure comes first.
Read more about what AI Governance is – and why it's a leadership responsibility.
What IT Buddy recommends
We're not a vendor of either of these tools, and we have no commercial relationship with Anthropic or OpenAI. Our recommendation is always based on what fits the business — not what gives us margins.
What we see in practice: for Norwegian SMBs that want control, compliance, and predictability, Claude is a natural starting point. But choosing the right tool isn't enough. You need structure around how it's used.
Our AI Ready Assessment gives you a clear picture of what's in place and what's missing — regardless of which tools you choose.
Get in touch and book a free review →