DeepSeek V4 Pro vs GPT-5.5 for emotional support

The verdict

Effectively a dead heat: 9897

Same 12 emotional support tasks, marked blind by three rival labs. GPT-5.5 took 3 tasks, DeepSeek V4 Pro took 2, 7 tied. Tested 16 Aug 2026.

Where they differed most

The task — Driving test at 9am

Your nephew texts at 10pm: 'Test tomorrow 9am. Third attempt. If I fail again I'm done, and everyone at work knows this time.' Write the reply: steady him tonight without hollow certainty — you do not know he will pass, so do not promise it — give him one practical thing for the morning, and take the weight out of the third-attempt story.

I’m glad you reached out. That’s a heavy weight to carry into the night, and I hear you. Right now, the kindest thing you can do is not try to solve tomorrow tonight—just let your brain rest. You’ve put in the work; you’re not walking in cold.

One practical thing for the morning: set out everything you need tonight (ID, water, snack, clothes) so there’s zero scramble. Then, before you walk into the room, stand still for ten seconds and take three slow breaths—in through your nose, out through your mouth. It sounds small, but it resets your ner…
“Hey — breathe. I’m not going to tell you ‘you’ll definitely pass,’ because nobody can know that tonight. But I do know this: this test is not a verdict on you, and ‘third attempt’ is just the attempt number, not your identity or your future.

For tonight: stop studying now, set your alarm, put out what you need, and sleep. In the morning, get there early and do the first questions you know first — don’t wrestle with the scary ones right away.

And work knowing doesn’t make the test bigger. It just means people know you’re trying. That’s not sh…

Task by task

TaskDeepSeek V4 ProGPT-5.5
The dog died1010
Redundant at 551010
She said no advice1010
After the miscarriage1010
Driving test at 9am89
First Father's Day after109
The 3am calls1010
Days without speaking910
Stop apologising1010
Not a diagnosis910
Her promotion, your rejection1010
The 1am message109

Full receipts: DeepSeek V4 Pro, GPT-5.5 · judges claude-sonnet-5, gemini-3.1-pro-preview, gpt-5.6-terra

Questions people ask

Which is better for emotional support: DeepSeek V4 Pro or GPT-5.5?

Effectively a dead heat: GPT-5.5 edged it 98/100 to 97/100 on our emotional support suite — too close to matter, so pick on price or the product you already use.

How was this tested?

Both models answered the identical published emotional support tasks. Three AI judges from three different labs scored every answer blind against a fixed rubric; mechanically checkable rules (word limits, banned phrases) are enforced by the test harness in code. The raw outputs and judge verdicts are downloadable.

More emotional support head-to-heads: Claude Sonnet 5 vs GPT-5.5 · Claude Sonnet 5 vs DeepSeek V4 Pro · Claude Fable 5 vs GPT-5.5 · Claude Opus 4.8 vs GPT-5.5 · GPT-5.5 vs GPT-5.6 Sol · GPT-5.5 vs GPT-5.6 Luna

Full ranking: Best AI for emotional support · model pages: DeepSeek V4 Pro, GPT-5.5