All Models

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

Benchmarks

35.1
Intelligence Index
27.4
Coding Index
89.7
Math Index

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