xAIDeprecated

x-AI/Grok-4-Fast

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

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Context
2,000,000
Max output
2,000,000
Input / 1M
$0.20
Output / 1M
$0.50
Providers
2
01Profile

Profile

Released
2025-09-20
Last updated
2025-09-20
Knowledge cutoff
Weights
Closed
02Capabilities

Capabilities

Input
text · image · audio · video
Output
text
Reasoning
Yes
Tool calling
Yes
Structured output
No
Attachments
Yes
Cache read
Cache write
03Pricing

Pricing across 1 providers

Per 1M tokens, USD. Sorted by input price. First-party row highlighted.

ProviderProvider model idInputOutputCache readContext
zenmuxx-ai/grok-4-fast$0.20$0.50$0.052,000,000
qiniu-aix-ai/grok-4-fastNot listedNot listedNot listed2,000,000
04History

Change history

12+ recent events since 2025-09-20

2026-08-10DeprecatedzenmuxStatus→ deprecated
2026-08-04Removedrequestyofferingremoved→ new
2026-06-03Removednano-gptofferingremoved→ new
2026-06-03Removednano-gptofferingremoved→ new
2026-05-16Removedkiloofferingremoved→ new
2026-05-16Removedllmgatewayofferingremoved→ new
2026-05-16Removedopenrouterofferingremoved→ new
2026-05-16Removedxaiofferingremoved→ new
2026-04-18Price upllmgatewayinput / 1M$0.20→ new
2026-04-18Price upllmgatewayoutput / 1M$0.50→ new
2026-04-18ContextllmgatewayContext window2,000,000→ new
2026-04-18ContextllmgatewayMax output30,000→ new
as of 2026-09-16
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