GPT-5.2 vs o4-mini
30-second takeaway
- o4-mini has the cheaper input: $1.1 vs $1.75 (per 1M tokens, 37% less)
- GPT-5.2 has the larger context: 400K vs 200K tokens
More specs (max output / capabilities)
| max output | 128,000 | 100,000 |
| Reasoning | ✓ Yes | ✓ Yes |
| Tool calls | ✓ Yes | ✓ Yes |
| Open weights | — No | — No |
Prices are official/data-source rates (per 1M tokens), not what relays actually charge — relay prices vary with discounts and group multipliers. See methodology.