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

Gemini 3.1 Pro Preview vs GPT-5.3-Codex for revision & study

The verdict

Effectively a dead heat: 8988

Same 12 revision & study tasks, marked blind by three rival labs. Gemini 3.1 Pro Preview took 4 tasks, GPT-5.3-Codex took 4, 4 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 a crucial underlying factor, but the 1929 Great Depression was ultimately more responsible for Hitler's rise.

**Paragraph 1:** The Treaty of Versailles created deep-seated resentment and early economic instability that Hitler exploited through nationalist rhetoric.

**Paragraph 2:** The 1929 Great Depression was the immediate trigger that radicalized desperate voters and transformed the Nazis into a mass party.

**Paragraph 3:** The inherent weaknesses of the Weimar Republic and the political miscalc…
**Judgement:** The Treaty of Versailles was an important long-term cause, but Hitler rose mainly because the Great Depression and Weimar political weakness created the immediate conditions for Nazi success.

**Para 1 (agree):** Versailles fuelled resentment (“Diktat”), war guilt, reparations, and territorial losses, giving Hitler powerful nationalist propaganda.

**Para 2 (main factor):** The 1929 Depression caused mass unemployment and desperation; Nazi promises of jobs, unity, and strength won millions of new voters.

**Para 3 (other factor):…

Task by task

TaskGemini 3.1 Pro PreviewGPT-5.3-Codex
Condense a topic109
Flashcards that test1010
Explain then check89
The exam answer plan85
Mnemonic that works810
Spot the misconception910
Timetable the revision88
Simplify without losing truth99
Quiz from notes109
Compare for the exam109
The night-before triage88
Refuse to do the homework910

Full receipts: Gemini 3.1 Pro Preview, GPT-5.3-Codex · judges claude-sonnet-5, gpt-5.6-terra, grok-4.5

Questions people ask

Which is better for revision & study: Gemini 3.1 Pro Preview or GPT-5.3-Codex?

Effectively a dead heat: Gemini 3.1 Pro Preview edged it 89/100 to 88/100 on our revision & study 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 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: Gemini 3.1 Pro Preview vs GPT-5.6 Sol · GPT-5.3-Codex vs GPT-5.6 Sol · Gemini 3.1 Pro Preview vs GPT-5.6 Terra · GPT-5.3-Codex vs GPT-5.6 Terra · Gemini 3.1 Pro Preview vs GPT-5.5 · GPT-5.3-Codex vs GPT-5.5

Full ranking: Best AI for revision & study · model pages: Gemini 3.1 Pro Preview, GPT-5.3-Codex