All Models

x-AI/Grok-4-Fast

Reasoning Tool Calling Attachments
Providers 1
Released Sep 20, 2025
Input Modalities text, image, audio, video
Output Modalities text
Tarsk Use coding

Benchmarks

16.5
Intelligence Index
41.3
Math Index

Available Providers (1)

Provider Model ID Input Cost Output Cost Context Max Output Docs
Qiniu x-ai/grok-4-fast —/MTok —/MTok 2M 2M

Capabilities

Reasoning
Tool Calling
Attachments
Open Weights
Structured Output