Robots AtlasRobots Atlas
Grok 4
Active
Jul 9, 2025
xAI
ProducerxAI
Grok
FamilyGrok
APIHosted UICloud

Grok 4

LLMMultimodalReasoningTool-Using

xAI fourth-generation flagship model with native tool use (function calling) and real-time search integration. Available in standard and Heavy (SuperGrok Heavy) tiers. Released July 9, 2025.

Technical specification

Context window
0K
License
Proprietary
Tools
Yes
Fine-tuning
No
Weights access
Closed
Knowledge cutoff
Nov 2024
Last updated: May 2, 2026

Modalities

Input
Text
Image
Output
Text

Capabilities

9

Reasoning★

Reasoning

Multi-step reasoning★

Reasoning

Coding★

Coding

Image understanding★

Vision

Multilingual★

Language

Long context★

Reasoning

Planning★

Planning

Function Calling

Planning

Structured output★

Structured gen.