Letizia Clerici 

Let me try rephrase what I think it is you are asking for.

You have pre-translated your file using DeepL.
Your segments are in a non confirmed state.
You want to review / validate the translations,  marking the segments as either confirmed or approved?

In helping you review / validate the translation - you want to compare the output with chatgpt4?
In summary you want it to compare DeepL output (differences) against chatgpt4 at document level and not per segment.

I assume you are using the OpenAI translator App.

Did I understand you correctly?

Looking forward to your confirmation so I know how best to reply 

Lyds

Yes, you interpreted correctly.

Moreover, I asked in another post you closed, I would like to ask you how to set GPT4 in the list of NMT engines in trados 2022 to select it for global pre-translation of the text. This is a second method we would like to try.

 Letizia Clerici the OpenAT Translator app works on a per segment basis.

What you are looking for may be actually better supported using an app called: RYSTUDIO GPT Translation Copilot
I have it installed but no experience in it yet

But what it does have is batch processing which you want to in order to pretranslate at document / project level
It also supports track changes so you can better identify the differences between various outputs.

It is also worth noting that in some cases - reply on apps to help better analyse the differences. Such as:
Post-Edit and Compare and MT Comparision 

I hope this gives you plenty to think about

Lyds

Thanks a lot!

However, I think this asnwer does not solve the other issue (posted in another question on the MT section, that you closde), ie. how to set GPT4 in the list of NMT engines in trados 2022.

Thanks!

Adele