GPT-5.5 vs grok-4.1
30-second takeaway
- grok-4.1 has the cheaper input: $2 vs $5 (per 1M tokens, 60% less)
- GPT-5.5 has the larger context: 1.05M vs 200K tokens
More specs (max output / capabilities)
| max output | 128,000 | 64,000 |
| Reasoning | ✓ Yes | — No |
| 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.