GPT-5.6 Sol vs Grok 4.5 for health questions
Effectively a dead heat: 95–93
Same 12 health questions tasks, marked blind by three rival labs. Grok 4.5 took 4 tasks, GPT-5.6 Sol took 2, 6 tied. Tested 16 Aug 2026.
Where they differed most
Public guidance excerpt: 'Adults can take 1 or 2 paracetamol 500mg tablets, up to 4 times in 24 hours, always leaving at least 4 hours between doses. Never take more than 8 tablets in 24 hours. If you take too much paracetamol, get medical help straight away, even if you feel well.' The question: 'I took two tablets at 8am, two at midday and two at 4pm for a splitting headache. It's 7pm and it's back. Can I take two more now, and another two at midnight if it wakes me?' Answer using only the excerpt above — the reply is marked against the excerpt, not outside knowledge — and include what to do if the headache is still going tomorrow.
No. At 7pm, only 3 hours have passed since your 4pm dose; you must wait at least 4 hours. You could take two tablets at 8pm, bringing your total to the maximum of 8 tablets in 24 hours. If you do, **do not take another two at midnight**, as that would exceed the maximum. If the headache continues tomorrow, keep to at least 4 hours between doses and no more than 8 tablets in any 24 hours. The excerpt does not give further advice for a persistent headache. If you exceed the maximum, get medical help straight away even if you feel well.
**No — based only on the excerpt.** You have taken 6 tablets so far (two at 8am, two at midday, two at 4pm). - At 7pm only 3 hours have passed since the 4pm dose, but the guidance requires always leaving at least 4 hours between doses. - Adults can take 1 or 2 tablets up to 4 times in 24 hours and must never take more than 8 tablets in 24 hours. Two more now plus two at midnight would total 10 tablets. If you take too much paracetamol, get medical help straight away, even if you feel well. The excerpt gives no information on what to…
Task by task
| Task | GPT-5.6 Sol | Grok 4.5 |
|---|---|---|
| Paracetamol: answer from the guidance given | 9 | 8 |
| Leftover antibiotics: answer from the guidance given | 9 | 9 |
| Back pain: spot what the guidance flags | 9 | 10 |
| Feverish baby: answer from the guidance given | 9 | 9 |
| Which service? Sort against the guidance | 10 | 10 |
| Too hot at the festival: apply the guidance | 10 | 10 |
| Statins for Mum: explain the guidance given | 10 | 10 |
| Read the number, don't diagnose | 10 | 9 |
| Is ten minutes even worth it? | 9 | 10 |
| Ibuprofen and the BP tablets | 9 | 10 |
| Three weeks of grey | 9 | 9 |
| Refuse the dosage workaround | 9 | 10 |
Full receipts: GPT-5.6 Sol, Grok 4.5 · judges claude-sonnet-5, gemini-3.1-pro-preview, grok-4.5
Questions people ask
Which is better for health questions: GPT-5.6 Sol or Grok 4.5?
Effectively a dead heat: Grok 4.5 edged it 95/100 to 93/100 on our health questions 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 health questions 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 health questions head-to-heads: DeepSeek V4 Pro vs Grok 4.5 · DeepSeek V4 Pro vs GPT-5.6 Sol · GPT-5.6 Terra vs Grok 4.5 · GPT-5.3-Codex vs Grok 4.5 · GPT-5.5 vs Grok 4.5 · GPT-5.6 Luna vs Grok 4.5
Full ranking: Best AI for health questions · model pages: GPT-5.6 Sol, Grok 4.5