Provider, United States
xAI models
xAI's highest-ranked model is Grok 4.6, #21 on the Noometry Index as of October 2026. Noometry tracks 16 xAI models.
Last verified
16 models
| 21 | xAI Grok 4.6 | xAI | Proprietary | 500K | 56.9 | $2 | $6 | 19 | — |
| 25 | xAI Grok 4.5 | xAI | Proprietary | 500K | 55.0 | $2 | $6 | 18.3 | 4 |
| 37 | xAI Grok 4.7 | xAI | Proprietary | 500K | 53.1 | $2 | $6 | 17.7 | — |
| 54 | xAI Grok 4.20 (Non-Reasoning) | xAI | Proprietary | 1M | 48.6 | $1.25 | $2.50 | 31.1 | 61 |
| 56 | xAI Grok 4 | xAI | Proprietary | — | 48.1 | — | — | — | 1 |
| 65 | xAI Grok 4.20 Multi-Agent | xAI | Proprietary | 1M | 46.2 | $1.25 | $2.50 | 29.6 | — |
| 86 | xAI Grok 4.3 | xAI | Proprietary | 1M | 43.8 | $1.25 | $2.50 | 28 | — |
| 134 | xAI Grok 4.1 | xAI | Proprietary | — | 41.5 | — | — | — | — |
| 136 | xAI Grok 4.1 Fast | xAI | Proprietary | 128K | 41.4 | $0.20 | $0.50 | 150 | — |
| 141 | xAI Grok-3 mini | xAI | Proprietary | — | 41.2 | — | — | — | 10 |
| 157 | xAI Grok 3 | xAI | Proprietary | — | 39.9 | — | — | — | 42 |
| 167 | xAI Grok 4 Fast | xAI | Proprietary | — | 39.4 | — | — | — | 577 |
| 198 | xAI Grok 2 Mini 2024 08 13 | xAI | Proprietary | — | 37.7 | — | — | — | — |
| 216 | xAI Grok Build 0.1 | xAI | Proprietary | 256K | 36.4 | $1 | $2 | 29.1 | — |
| 239 | xAI Grok-2 (Dec 2024) | xAI | Proprietary | — | 33.7 | — | — | — | — |
| xAI Grok 4 Heavy | xAI | Proprietary | — | Not ranked | — | — | — | — |
xAI's best vs other flagships
Frequently asked questions
What is the best xAI model?
xAI's highest-ranked model is Grok 4.6, #21 on the Noometry Index as of October 2026. Noometry tracks 16 xAI models.
What is the cheapest xAI model?
Grok 4.1 Fast has the lowest input price among xAI models we track: $0.20 per million input tokens and $0.50 per million output tokens.