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x-AI/Grok-4-Fast

xAI · grok-4-fast

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Fast Grok model for responsive chat, reasoning, and tool-assisted work

Specification

most-agreed values

Context
2M
Max output
2M
Released
2025-09-20
Knowledge cutoff
2025-01-01
Retires
Open weights
no
Input
text, image, audio, video
Output
text

Price

US dollars per million tokens · most-agreed

Input
$0.20
Output
$0.50
Cache read
$0.05

Available from 3 hosts

HostIn $/MOut $/MCache rdCache wrContextOutputRetires
zenmux · x-ai$0.20$0.50$0.052M64K
oci · oci$5.00$25.00131K131K
qiniu-ai · x-ai2M2M

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