FFree
GrokClosed Weights

grok-4-fast-reasoning

grok-4-fast-reasoning

Best Input Price

$0.18 / 1M

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

Context Window

2,000,000 tokens

Reasoning

No

Tool Calling

Supported

Released

2026-01

Inference Providers (2)

ProviderModel IDContextInput / 1MOutput / 1MAction
Jiekou.AIgrok-4-fast-reasoning2,000,000$0.18$0.45Docs ↗
Heliconegrok-4-fast-reasoning2,000,000$0.20$0.50Docs ↗