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xAI: Grok 4 Fast Reasoning

grok Reasoning Tool Calling
Providers 1
Released Sep 1, 2025
Input Modalities text, image
Output Modalities text
Tarsk Use coding

Available Providers (1)

Provider Model ID Input Cost Output Cost Context Max Output Docs
Helicone grok-4-fast-reasoning $0.20/MTok $0.50/MTok 2M 2M

Capabilities

Reasoning
Tool Calling
Attachments
Open Weights
Structured Output