grok-4.1-fast-non-reasoning Preview

reasoning

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Infrastructure
Streaming

Details

Model IDgrok-4.1-fast-non-reasoning
Provider Azure AI Foundry
Creator xAI
Familygrok-4.1
License—
Status—
Typereasoning
Input modalitiestext, image
Output modalitiestext
Open weight—
Parameters—
Architecture—
Context window—
Max input—
Max output—
Reasoning tokens—
Knowledge cutoff—
Release date—
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Family Comparison: grok-4.1

ModelContextMax out
grok-4.1-fast-non-reasoning Preview——
grok-4.1-fast-reasoning Preview——

API

GET/v1/models/azure/grok-4.1-fast-non-reasoning

grok-4.1-fast-non-reasoning Preview

grok-4.1-fast-non-reasoning
Changes · 4 entries
grok-4.1-fast-non-reasoningupdate6231fb5Apr 22, 2026, 02:50 AM
namegrok-4.1-fast-non-reasoning→grok-4.1-fast-non-reasoning Preview
grok-4.1-fast-non-reasoningupdate2b100acMar 23, 2026, 05:30 AM
tools["function_calling"]
grok-4.1-fast-non-reasoningupdate7a4f1f6Mar 22, 2026, 05:43 AM
model_typereasoning
grok-4.1-fast-non-reasoningcreate7f5c66fMar 21, 2026, 05:16 AM