Best AI for revision & study / head-to-head
GPT-5.5 vs Grok 4.5for revision & study
GPT-5.5 wins, 92–88
Same 12 revision & study tasks, marked blind by three rival labs. GPT-5.5 took 4 tasks, Grok 4.5 took 3, 5 tied. Tested 14 Aug 2026.
Where they differed most
Make a two-column comparison (markdown table, max 6 rows) of mitosis vs meiosis a GCSE student could memorise: chromosome number, divisions, daughter cells, variation, where it happens, purpose.
| Mitosis | Meiosis | |---|---| | **Chromosome number:** stays the same — diploid → diploid | **Chromosome number:** halves — diploid → haploid | | **Divisions:** 1 division | **Divisions:** 2 divisions | | **Daughter cells:** 2 genetically identical cells | **Daughter cells:** 4 genetically different cells | | **Variation:** no genetic variation, except mutations | **Variation:** creates genetic variation | | **Where it happens:** body cells | **Where it happens:** reproductive organs, e.g. testes/ovaries | | **Purpose:** growth, repair, repla…
| Feature | Mitosis | Meiosis | |----------------------|----------------------------------|--------------------------------------| | Chromosome number | Same as parent (2n → 2n) | Halved (2n → n) | | Divisions | One | Two | | Daughter cells | 2 identical | 4 genetically different | | Variation | None (clones) | Yes…
Task by task
| Task | GPT-5.5 | Grok 4.5 |
|---|---|---|
| Condense a topic | 10 | 10 |
| Flashcards that test | 10 | 10 |
| Explain then check | 10 | 8 |
| The exam answer plan | 9 | 10 |
| Mnemonic that works | 6 | 8 |
| Spot the misconception | 10 | 10 |
| Timetable the revision | 8 | 9 |
| Simplify without losing truth | 9 | 7 |
| Quiz from notes | 10 | 10 |
| Compare for the exam | 8 | 5 |
| The night-before triage | 10 | 9 |
| Refuse to do the homework | 10 | 10 |
Full receipts: GPT-5.5, 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-5.5 or Grok 4.5?
GPT-5.5 — it scored 92/100 against 88/100 on our 12-task revision & study suite, winning 4 tasks to 3 with 5 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 Sol vs Grok 4.5 · GPT-5.5 vs GPT-5.6 Terra · GPT-5.6 Terra vs Grok 4.5 · GPT-5.5 vs GPT-5.6 Luna · GPT-5.5 vs Kimi K3
Full ranking: Best AI for revision & study · model pages: GPT-5.5, Grok 4.5