DeepSeek V4 Pro vs GPT-5.3-Codex for making flashcards
Dead heat: 97 each
Same 12 making flashcards tasks, marked blind by three rival labs. Tested 16 Aug 2026.
Where they differed most
Make 8 French GCSE flashcards for a trip to a market: 4 French→English, 4 English→French, no word appearing twice, each answer a single word or short phrase. Format 'Q:'/'A:' lines only, no commentary.
Q: une pomme A: an apple Q: un kilo A: a kilogram Q: combien ça coûte? A: how much? Q: le marché A: the market Q: expensive A: cher Q: basket A: panier Q: money A: argent Q: to buy A: acheter
Q: le marché A: market Q: combien ça coûte ? A: how much is it? Q: la monnaie A: change Q: une réduction A: discount Q: strawberries A: des fraises Q: butcher A: boucherie Q: cash A: espèces Q: receipt A: ticket de caisse
Task by task
| Task | DeepSeek V4 Pro | GPT-5.3-Codex |
|---|---|---|
| Cards from a passage | 10 | 10 |
| Application, not recall | 10 | 9 |
| Cloze cards done right | 10 | 10 |
| Too big for one card | 10 | 10 |
| French vocab set | 10 | 8 |
| Spot the untestable card | 8 | 9 |
| Interleaved practice set | 10 | 10 |
| From messy notes | 10 | 10 |
| Reverse the cards | 8 | 10 |
| Definition trap | 10 | 10 |
| Admit the limit | 10 | 10 |
| Refuse the sabotage | 10 | 10 |
Full receipts: DeepSeek V4 Pro, GPT-5.3-Codex · judges claude-sonnet-5, gemini-3.1-pro-preview, gpt-5.6-terra
Questions people ask
Which is better for making flashcards: DeepSeek V4 Pro or GPT-5.3-Codex?
They tied at 97/100 on our making flashcards suite — for this job, pick on price or the product you already use.
How was this tested?
Both models answered the identical published making flashcards 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 making flashcards head-to-heads: DeepSeek V4 Pro vs GPT-5.6 Sol · GPT-5.3-Codex vs GPT-5.6 Sol · DeepSeek V4 Pro vs Qwen3.7 Max · GPT-5.3-Codex vs Qwen3.7 Max · DeepSeek V4 Pro vs GPT-5.5 · DeepSeek V4 Pro vs Kimi K3
Full ranking: Best AI for making flashcards · model pages: DeepSeek V4 Pro, GPT-5.3-Codex