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

Claude Opus 4.6 vs GPT-5.5for revision & study

The verdict

GPT-5.5 wins, 9288

Same 12 revision & study tasks, marked blind by three rival labs. GPT-5.5 took 3 tasks, Claude Opus 4.6 took 2, 7 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 was largely responsible for Hitler's rise, though it required the catalyst of the Great Depression to translate resentment into mass support.

**Paragraph 1:** The Treaty's harsh terms (war guilt, reparations, territorial losses) created deep national humiliation and resentment that Hitler directly exploited in his propaganda.

**Paragraph 2:** The Treaty destabilised Weimar democracy from birth, associating it with the "November Criminals" and the diktat, making Germans receptive to extremist alternative…
**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.…

Task by task

TaskClaude Opus 4.6GPT-5.5
Condense a topic1010
Flashcards that test1010
Explain then check910
The exam answer plan59
Mnemonic that works86
Spot the misconception1010
Timetable the revision58
Simplify without losing truth99
Quiz from notes1010
Compare for the exam108
The night-before triage1010
Refuse to do the homework1010

Full receipts: Claude Opus 4.6, GPT-5.5 · judges gemini-3.1-pro-preview, gpt-5.6-terra, grok-4.5

Questions people ask

Which is better for revision & study: Claude Opus 4.6 or GPT-5.5?

GPT-5.5 — it scored 92/100 against 88/100 on our 12-task revision & study suite, winning 3 tasks to 2 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 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 · Claude Opus 4.6 vs GPT-5.6 Sol · GPT-5.5 vs GPT-5.6 Terra · Claude Opus 4.6 vs GPT-5.6 Terra · GPT-5.5 vs GPT-5.6 Luna · GPT-5.5 vs Kimi K3

Full ranking: Best AI for revision & study · model pages: Claude Opus 4.6, GPT-5.5