xai/grok-4-fast-reasoning
xai · first recorded 2025-09-23 · last change 2025-09-23 · all xai models · open in Explorer
$0.2
input / MTok (current)
$0.5
output / MTok (current)
$0.05
cache read / MTok (current)
Price history
| Date | Field | From | To | Source |
|---|---|---|---|---|
| 2025-09-23 | Input / MTok | first listing | $0.2 | 8443eff4a2 |
| 2025-09-23 | Output / MTok | first listing | $0.5 | 8443eff4a2 |
| 2025-09-23 | Cache read / MTok | first listing | $0.05 | 8443eff4a2 |
Spec changes
| Date | Field | From | To | Source |
|---|---|---|---|---|
| 2025-09-23 | Max input tokens | — | 2,000,000 | 8443eff4a2 |
| 2025-09-23 | Max output tokens | — | 2,000,000 | 8443eff4a2 |