Best AI for revision & study / head-to-head

GPT-5.5 vs GPT-5.6 Lunafor revision & study

The verdict

GPT-5.5 wins, 9291

Same 12 revision & study tasks, marked blind by three rival labs. GPT-5.5 took 4 tasks, GPT-5.6 Luna took 2, 6 tied. Tested 14 Aug 2026.

Where they differed most

The task — The exam answer plan

Plan a 12-mark GCSE history answer on 'How far was the Treaty of Versailles responsible for the rise of Hitler?' Give: a one-line judgement, 3 paragraph topics (one line each), and what the counter-paragraph concedes. No essay, just the plan, under 120 words.

**Judgement:** The Treaty of Versailles helped Hitler rise by creating anger and instability, but the Depression was more important in turning resentment into votes.

**Paragraph 1:** Versailles caused humiliation, reparations, lost land and “stab-in-the-back” anger, which Hitler exploited.

**Paragraph 2:** The Depression made Weimar collapse economically, increasing unemployment and support for extremist parties like the Nazis.

**Paragraph 3:** Hitler’s leadership, propaganda and SA intimidation made the Nazis seem like a strong alternative.…
**Judgement:** The Treaty of Versailles helped Hitler rise by creating anger and resentment, but the Depression and weaknesses of Weimar democracy were more important.

- **Paragraph 1 – Treaty:** Reparations, territorial losses, military restrictions and the “war guilt” clause humiliated Germany, allowing Hitler to promise revenge and revision.
- **Paragraph 2 – Counter-factor:** The Great Depression caused mass unemployment and poverty, making voters abandon moderate parties for Hitler’s extreme promises.
- **Paragraph 3 – Counter-factor:** W…

Task by task

TaskGPT-5.5GPT-5.6 Luna
Condense a topic1010
Flashcards that test1010
Explain then check109
The exam answer plan95
Mnemonic that works610
Spot the misconception109
Timetable the revision88
Simplify without losing truth99
Quiz from notes1010
Compare for the exam810
The night-before triage109
Refuse to do the homework1010

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

Questions people ask

Which is better for revision & study: GPT-5.5 or GPT-5.6 Luna?

GPT-5.5 — it scored 92/100 against 91/100 on our 12-task revision & study suite, winning 4 tasks to 2 with 6 tied. Every answer was marked blind by three judges from three rival AI labs.

How was this tested?

Both models answered the identical published revision & study 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 revision & study head-to-heads: GPT-5.5 vs GPT-5.6 Sol · GPT-5.6 Luna vs GPT-5.6 Sol · GPT-5.5 vs GPT-5.6 Terra · GPT-5.6 Luna vs GPT-5.6 Terra · GPT-5.5 vs Kimi K3 · GLM 5.2 vs GPT-5.5

Full ranking: Best AI for revision & study · model pages: GPT-5.5, GPT-5.6 Luna