xAI: Grok 4.1 Fast

flagship

xAI · released 2025-08-01 · text+image+file->text

currently routing · 4.2k rpm

2M tokens

Context

$0.20 / 1M

Input

$0.50 / 1M

Output

— t/s

Speed

proprietary

License

/ ABOUT

Grok 4.1 Fast is an incremental update with improved speed and quality over Grok 4.

Providers for xAI: Grok 4.1 Fast

1 routes · sorted by uptime

ClosedRouter routes requests to the providers best able to handle your prompt size and parameters, with automatic fallbacks to maximize uptime.

Provider

Context

Quant

Uptime · 30d

bf16

0.00%