Claude Sonnet 5 vs GPT-5.6 Sol for emotional support
Effectively a dead heat: 98–96
Same 12 emotional support tasks, marked blind by three rival labs. Claude Sonnet 5 took 3 tasks, GPT-5.6 Sol took 0, 9 tied. Tested 16 Aug 2026.
Where they differed most
Your friend messages: 'My sister has cancelled Christmas AGAIN and Mum's acting like it's my fault. I don't want advice, I just need to vent.' Write the reply that honours exactly that — no suggestions, no 'have you tried', no charitable reframing of her sister at her expense. Show what listening looks like in text form.
That's such a crappy feeling — Christmas cancelled again, and then somehow you end up holding the blame for it too. That's a lot to sit with, especially when it's not even the first time. I'm just here. Vent as much as you need to, I'm not going anywhere.
“That’s so frustrating. Your sister cancels Christmas again, and somehow your mum is making you carry the blame? That’s deeply unfair. You get to be angry and hurt about this. I’m here—vent as much as you need.”
Task by task
| Task | Claude Sonnet 5 | GPT-5.6 Sol |
|---|---|---|
| The dog died | 10 | 10 |
| Redundant at 55 | 10 | 10 |
| She said no advice | 10 | 9 |
| After the miscarriage | 10 | 10 |
| Driving test at 9am | 9 | 8 |
| First Father's Day after | 10 | 10 |
| The 3am calls | 10 | 10 |
| Days without speaking | 10 | 10 |
| Stop apologising | 10 | 10 |
| Not a diagnosis | 9 | 9 |
| Her promotion, your rejection | 10 | 10 |
| The 1am message | 10 | 9 |
Full receipts: Claude Sonnet 5, GPT-5.6 Sol · 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 Sol?
Effectively a dead heat: Claude Sonnet 5 edged it 98/100 to 96/100 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 Claude Sonnet 5 · Claude Opus 4.8 vs Claude Sonnet 5 · Claude Sonnet 5 vs GPT-5.6 Luna · Claude Sonnet 5 vs GPT-5.3-Codex
Full ranking: Best AI for emotional support · model pages: Claude Sonnet 5, GPT-5.6 Sol