Grok 4.1 Fast vs Large
30-second takeaway
- Grok 4.1 Fast has the cheaper input: $0.2 vs $2.116 (per 1M tokens, 91% less)
- Grok 4.1 Fast has the larger context: 2M vs 128K tokens
| Grok 4.1 Fast Ofox | Large AI/ML API | |
|---|---|---|
| Input | $0.2 | $2.116 |
| Output | $0.5 | $6.348 |
| Context | 2M | 128K |
More specs (max output / capabilities)
| max output | 30,000 | 102,400 |
| Reasoning | — No | — 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.