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Grok 4 Fast Reasoning

Grok 4 Fast Reasoning is available through 2 providers and 2 concrete deployments tracked by ALLM.

xai/grok-4-fast-reasoning

textOfficial lab notation
Official naming source

Deployments

2

Providers

2

Max context

2M

Input from

$0.20 / 1M

Grok 4 Fast Reasoning provider comparison

Pricing and compatibility are tracked per provider deployment, because the same model can expose different features depending on where it runs.

ProviderProvider model IDModeRegionInputOutputContextTools
Azure AIgrok-4-fast-reasoningChatglobal$0.20 / 1M$0.50 / 1M131.1Ksupported
xAIgrok-4-fast-reasoningChatglobal$0.20 / 1M$0.50 / 1M2Msupported

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