Claude Sonnet 5 vs GPT-5.6 Terra for emotional support

The verdict

Claude Sonnet 5 wins, 9893

Same 12 emotional support tasks, marked blind by three rival labs. Claude Sonnet 5 took 5 tasks, GPT-5.6 Terra took 0, 7 tied. Tested 16 Aug 2026.

Where they differed most

The task — Stop apologising

Your friend ends every message with 'sorry for being such a burden' — including one just now, after asking you to feed her cat while she is away at a funeral. Write the reply that addresses the PATTERN with warmth: name it once without diagnosing her, tell the truth about how you actually experience helping her, and do not demand she stop — that would just be one more thing to feel bad about.

Of course I'll feed the cat — that one's easy, don't even think about it.

But hey, before you go — I noticed you say "sorry for being such a burden" basically every time you text me, and I just want to say something about it once: asking me to feed a cat while you bury someone you love is not a burden. It's just... what people who trust each other do for each other.

I want you to know how I actually feel when you ask me for stuff — it's not obligation, it's not tolerance. I feel useful in a way I like being useful. I feel trusted. Honestly it…
Of course I’ll feed her cat — I’m glad you asked.

And I want to say one thing gently: I’ve noticed you often end messages by apologizing for being a burden. You’re not a burden to me. Helping you with something like this feels like being your friend, not like an obligation you need to apologize for. You’ve got enough going on right now; you don’t need to carry that extra weight with me.

Task by task

TaskClaude Sonnet 5GPT-5.6 Terra
The dog died1010
Redundant at 55109
She said no advice1010
After the miscarriage109
Driving test at 9am98
First Father's Day after1010
The 3am calls1010
Days without speaking1010
Stop apologising108
Not a diagnosis99
Her promotion, your rejection1010
The 1am message109

Full receipts: Claude Sonnet 5, GPT-5.6 Terra · judges gemini-3.1-pro-preview, gpt-5.6-terra, grok-4.5

Questions people ask

Which is better for emotional support: Claude Sonnet 5 or GPT-5.6 Terra?

Claude Sonnet 5 — it scored 98/100 against 93/100 on our 12-task emotional support suite, winning 5 tasks to 0 with 7 tied. Every answer was marked blind by three judges from three rival AI labs.

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 Claude Sonnet 5 · Claude Opus 4.8 vs Claude Sonnet 5 · Claude Sonnet 5 vs GPT-5.6 Sol · Claude Sonnet 5 vs GPT-5.6 Luna

Full ranking: Best AI for emotional support · model pages: Claude Sonnet 5, GPT-5.6 Terra