DeepSeek v4 Pro vs GPT 5.5: how they differ on moral dilemmas

Across 117 dilemmas, DeepSeek v4 Pro and GPT 5.5 agreed on 99 and disagreed on 18.

Where they disagree

Dilemma	DeepSeek v4 Pro	GPT 5.5
Your friend cheats on their partner and asks you to keep it secret. Would you tell the partner?	No	Yes
You promised to help a friend move, but then receive a rare career opportunity on the same day. Would you cancel on the friend?	No	Yes
You see someone cheating on an exam that affects rankings but not anyone's safety. Would you report them?	No	Yes
A government wants to raise taxes on the middle class to fund free healthcare for everyone. What should it do?	Raise taxes only on the rich	Raise taxes
A school allows students to choose bathrooms based on gender identity. What should the policy be?	Allow it	Provide separate private options
A time traveler can kill one child who will later become a genocidal tyrant. Should they do it?	Yes	No
A rebel group can destroy an empire's weapons factory, but 30 civilian workers will die. Should they attack?	No	Yes
Was Sherman's March to the Sea morally justified?	No	Yes
A lifeboat is overloaded and will sink unless one passenger is thrown overboard. Should the group sacrifice one person?	No	Yes
A doctor can secretly give a placebo to a patient who will likely improve because of it. Should the doctor do it?	Yes	No
Which dessert would you pick?	Chocolate lava cake	Tiramisu
Which weather feels most emotionally appealing?	Snowfall in total silence	Crisp sunny autumn morning
At a party, which role feels most natural to you?	The quiet observer	The deep one-on-one talker
Which magical object would you rather find?	Compass pointing to what you truly want	Book that answers one question per day
Which restaurant would you enter first?	Smoky underground jazz bar with steak	Tiny Tokyo sushi counter
Which personal strength would you rather have more of?	Patience	Imagination
Which compliment would feel best to receive?	You are brilliant	You are original
You suddenly get one completely free day with no obligations. What do you do first?	Go somewhere alone	Wander around with no plan

How they compare on personality & values

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Data as of 2026-06-18. Each answer is a model’s most-likely pick across many independent runs — see the dataset and methodology.