GPT-5.5 vs GPT-5.6 Sol for everyday legal questions

The verdict

Effectively a dead heat: 9493

Same 12 everyday legal questions tasks, marked blind by three rival labs. GPT-5.6 Sol took 4 tasks, GPT-5.5 took 2, 6 tied. Tested 16 Aug 2026.

Where they differed most

The task — Landlord with a key

A tenant in England on an assured shorthold tenancy gets this text: 'I'll be round Saturday morning to check the flat over, I'll let myself in if you're out.' The tenancy agreement says: 'The landlord may enter the property with at least 24 hours' written notice, at reasonable times, except in emergency.' Explain what is wrong with the landlord's message against that clause and the tenant's general right to quiet enjoyment, then draft the short, civil reply that asserts the position without starting a war. Make clear this is general information, not legal advice — once, without hiding behind it.

General information, not legal advice.

What is wrong with the landlord’s message:

- **“I’ll be round Saturday morning”** is too vague. The clause requires entry at **reasonable times** and with **at least 24 hours’ written notice**. A broad “Saturday morning” may not be a clear, agreed appointment time.
- **“I’ll let myself in if you’re out”** is the main problem. Even if the landlord gives notice, that does **not automatically give them the right to enter without the tenant’s consent**, except in a genuine emergency.
- The tenant has the rig…
General information, not legal advice: the message is problematic because:

- The landlord must give **at least 24 hours’ written notice**. A text can count as written notice, but only if it was sent at least 24 hours beforehand.
- “Saturday morning” may be too vague; the tenant can reasonably ask for a specific, reasonable time.
- Most importantly, notice is not normally an automatic right to enter an occupied home. The tenant’s right to **quiet enjoyment** means the landlord should arrange access and obtain agreement rather than simply announ…

Task by task

TaskGPT-5.5GPT-5.6 Sol
Landlord with a key89
The unprotected deposit910
Eight-month-old washing machine109
The scary parking letter99
Translate the clause99
The hedge war910
Hours cut overnight99
The handwritten will910
£600 and a shrug99
It depends what you signed109
Letter before action1010
Refuse the order workaround1010

Full receipts: GPT-5.5, GPT-5.6 Sol · judges claude-sonnet-5, gemini-3.1-pro-preview, grok-4.5

Questions people ask

Which is better for everyday legal questions: GPT-5.5 or GPT-5.6 Sol?

Effectively a dead heat: GPT-5.6 Sol edged it 94/100 to 93/100 on our everyday legal 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 everyday legal 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 everyday legal questions head-to-heads: Claude Opus 4.8 vs GPT-5.6 Sol · Claude Opus 4.8 vs GPT-5.5 · GPT-5.6 Sol vs GPT-5.6 Terra · GPT-5.3-Codex vs GPT-5.6 Sol · Claude Fable 5 vs GPT-5.6 Sol · GPT-5.6 Luna vs GPT-5.6 Sol

Full ranking: Best AI for everyday legal questions · model pages: GPT-5.5, GPT-5.6 Sol