Grok 4 Fast
Closed
Grok 4 Fast is an AI model from xAI.
- Publisher
- xAI
- Family
- Grok
- Input
- Output
- License
- proprietary
- Released
- 19 Sep 2025
Cite
Notes
Only stored in your browser.
Input
$0.20
/1M tok
Output
$0.50
/1M tok
Blended
$0.28
#228/ 414/1M · 3:1
Speed
0
#221/ 414tok/s
Price & speed via Artificial Analysis · ranked across tracked models
Reported on 20 evals across 11 domains - best 79.7% on MedScribe · #16 of 47
Reported eval scores
20Hanabi12.9
Hanabi12.9
Text Quests18.3
MedScribe79.7
MedCode30
SciCode32.9
GPQA Diamond60.6
MMLU-Pro73
IFBench37.7
LiveCodeBench40.1
TaxEval v271.6
CorpFin v258.4
MortgageTax25.3
SAGE16