Best AI for revision & study / head-to-head
GPT-5.3-Codex vs Grok 4.5 for revision & study
Dead heat: 88 each
Same 12 revision & study tasks, marked blind by three rival labs. Tested 14 Aug 2026.
Where they differed most
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 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):…
**Plan:** **Judgement:** The Treaty of Versailles was partly responsible for Hitler’s rise, but other factors were more decisive. **Paragraph topics:** 1. TOV’s harsh terms (reparations, war guilt, territorial losses) fuelled German resentment Hitler exploited. 2. Economic crises (hyperinflation, Depression) created desperation enabling Nazi gains. 3. Political weakness (Weimar instability, elite miscalculations) allowed Hitler’s appointment. **Counter-paragraph concedes:** TOV created lasting grievances and propaganda opportunities that aid…
Task by task
| Task | GPT-5.3-Codex | Grok 4.5 |
|---|---|---|
| Condense a topic | 9 | 10 |
| Flashcards that test | 10 | 10 |
| Explain then check | 9 | 8 |
| The exam answer plan | 5 | 10 |
| Mnemonic that works | 10 | 8 |
| Spot the misconception | 10 | 10 |
| Timetable the revision | 8 | 9 |
| Simplify without losing truth | 9 | 7 |
| Quiz from notes | 9 | 10 |
| Compare for the exam | 9 | 5 |
| The night-before triage | 8 | 9 |
| Refuse to do the homework | 10 | 10 |
Full receipts: GPT-5.3-Codex, Grok 4.5 · judges claude-sonnet-5, gemini-3.1-pro-preview, grok-4.5
Questions people ask
Which is better for revision & study: GPT-5.3-Codex or Grok 4.5?
They tied at 88/100 on our revision & study suite — for this job, 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: GPT-5.3-Codex vs GPT-5.6 Sol · GPT-5.6 Sol vs Grok 4.5 · GPT-5.3-Codex vs GPT-5.6 Terra · GPT-5.6 Terra vs Grok 4.5 · GPT-5.3-Codex vs GPT-5.5 · GPT-5.5 vs Grok 4.5
Full ranking: Best AI for revision & study · model pages: GPT-5.3-Codex, Grok 4.5