vs ChatGPT: Which Is Better for Document Analysis?

ChatGPT vs : Two Different Approaches

OpenAI's ChatGPT has become synonymous with conversational artificial intelligence. Millions of people use it for everything from writing emails to programming. But when it comes to analyzing professional documents, is it really the best tool?

The Problem with ChatGPT for Documents

ChatGPT is a general-purpose model. That's both its strength and weakness:

ChatGPT Strengths:

• Very broad general knowledge
• Excellent for writing and creativity
• Can program, translate, summarize...
• Natural conversational interface

Weaknesses for professional documents:

• Your documents go to OpenAI servers
• Doesn't cite specific sources from your document
• Can "hallucinate" legal information
• Doesn't have updated Spanish legislation
• Free version has strict limits

Detailed Comparison

The Problem of Legal "Hallucinations"

When you ask ChatGPT about a specific Spanish legal topic, it can:

1. Invent articles that don't exist
2. Mix legislation from different countries
3. Cite repealed laws
4. Give incorrect dates

This isn't ChatGPT's fault: it's simply not designed to be a source of legal truth. It's a language model, not a legal database.

is specifically designed to avoid this:

• Every response cites the exact source
• Only responds based on indexed documents
• Legislation is regularly updated from official sources
• If it doesn't have the information, it clearly says so

Use Cases: When to Use Each?

The Privacy Factor

Accuracy in Legal Documents

Real example: VAT query

Question: "What's the VAT rate for training services?"

ChatGPT might respond:

"Training services are usually VAT exempt according to article 20 of the VAT Law..."

(Generally correct, but without important nuances about exactly what type of training)

responds:

"According to article 20.One.9º of Law 37/1992 on VAT (last update BOE 28/12/2024), educational service provisions are exempt... [exact quote of the complete article with exceptions]"

The difference is in precision and traceability.

Real Cost of Use

Integration with Your Workflow

Why Not Both?

The reality is they're not mutually exclusive. Many professionals use:

• ChatGPT for creative and general tasks
• for sensitive documents and legal queries

The key is using each tool for what it's designed for.

Conclusion

ChatGPT is an extraordinary general-purpose tool. But when you work with:

• Confidential client information
• Documents requiring exact citations
• Updated Spanish legislation
• Data that can't leave your control

is specifically designed for that use case.

It's not better or worse than ChatGPT: it's different. And that difference matters when privacy and precision are critical.

Want to compare for yourself? Try the BOE expert for free and compare the responses with ChatGPT.