LLM ReferenceLLM Reference

Grok 4.3 Beta

ProprietaryMultimodal

About

xAI's Grok 4.3 Beta, launched April 17 for SuperGrok Heavy subscribers ($300/month). Retains the 2M-token context window from Grok 4.20 and adds native video input processing, PDF/spreadsheet/PowerPoint document generation, and integration with Grok Computer for autonomous desktop automation. Full rollout estimated mid-to-late May 2026. API ID: grok-4.3-beta.

Capabilities

VisionMultimodalReasoningFunction CallingTool UseStructured OutputsCode Execution

Rankings

Specifications

FamilyGrok 4
Released2026-04-17
Parameters~0.5T
Context2M
Specializationgeneral
LicenseProprietary
Trainingpretrained

Created by

Ethical AI for universal truth-seeking

San Francisco, California, United States
Founded 2023
Website